Collaborators: Silica in space with Richard Black and Dexter Greene - podcast episode cover

Collaborators: Silica in space with Richard Black and Dexter Greene

Sep 05, 202446 min
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Episode description

College freshman Dexter Greene and Microsoft research manager Richard Black discuss how technology that stores data in glass is supporting students as they expand earlier efforts to communicate what it means to be human to extraterrestrials.

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Transcript

[MUSIC PLAYS UNDER DIALOGUE] 

DEXTER GREENE

So the original Golden Record is …  I like to think of it as, sort of, a time capsule of humanity that was designed to represent  us—who we are as a species, what we love,   why we love it, what we do, and, sort of, our  diversity, why we're all different, why we do   different things—to possible extraterrestrials.  And so the Golden Record was produced in 1977   by a relatively small team led by Carl Sagan.  What we're doing, my team, is we're working  

on creating an updated Golden Record. And I  began researching different storage methods,   and I began to realize that we hadn't made that  much headway in storage since then. Of course,   we've made progress but nothing really spectacular  until I found 5D storage. And I noticed that there   were only two real places that I could find  information about this. One was the University  

of Southampton, and one was Project Silica at  Microsoft. I reached out to the University of   Southampton and Dr. Black, and somehow, kind of,  to my surprise, Dr. Black actually responded!

RICHARD BLACK

I was in particularly intrigued by  the Avenues Golden Record application because I could see it was an application not just where  Silica was a better media than what people use   today but really where Silica was the only media  that would work because none of the standard   media really work over the kind of time scales  that are involved in space travel, and none of   them really work in the harsh environments that  are involved in space and outer space and space  

travel. So in some ways for me, it was an easy  way to communicate just what a transformative   digital media technology Silica is, and that's why  as an application, it really grabbed my interest. [TEASER ENDS] 

GRETCHEN HUIZINGA

You're  listening to Collaborators, a Microsoft Research Podcast showcasing the  range of expertise that goes into transforming   mind-blowing ideas into world-changing  technologies. I'm Dr. Gretchen Huizinga. [MUSIC FADES]  Today I'm talking to Dr. Richard Black, a senior  principal research manager and the research   director of Project Silica at Microsoft  Research. And with him is Dexter Greene,   a rising freshman at the University of  Michigan and a recent graduate of Avenues:  

The World School in New York City. Richard and  Dexter are involved in a unique multidisciplinary,   multi-institutional, and multigenerational  collaboration called Avenues Golden Record,   a current effort to communicate with  extraterrestrial intelligence. We'll   get into that in a lot more detail shortly,  but first, let's meet our collaborators.

Richard, let's start with you. As I've  just noted, you're a research manager at   the Cambridge UK lab of Microsoft Research  and the research director of a really cool   technology called Silica. In a second, I want  you to talk about that more specifically,   but right now, tell us about yourself. What's your  background? What are your research interests writ   large? And what excites you about the  broad remit of your work at Cambridge?

RICHARD BLACK

So my background is a computer  scientist. I've been at Microsoft Research for 24 years, and before that, I had a faculty  position at a university here in the UK. So   I also have an interest in education, and it's  been a delight to interact with Dexter and the   other students at Avenues. My research interests  really cover all aspects of computer systems,  

which means operating systems, networking, and  computer architecture. And the exciting thing for   me about being at Microsoft Research is that this  is really a period of rapid change with the cloud,   digital transformation of society.  It gives really a huge motivation to   research better underlying technologies  for everything that we do. And for me   in the last few years, that's been in  archival storage with Project Silica.

HUIZINGA

Hmm. Richard, I'm interested  to know a little bit more about your background. Where did you go to school,  what led you to this kind of research,   and what university were you teaching at?

BLACK

Yeah, I went to university and did my  PhD here in Cambridge. I was teaching at the University of Glasgow, which is in Scotland in  the UK, and teaching again computer systems,   so those operating systems, computer  architecture, and computer networking.

HUIZINGA

Well, Dexter, you're the first  student collaborator we’ve featured on this show, which is super fun. Tell  us about yourself and about Avenues:   The World School, where this  particular collaboration was born.

DEXTER GREENE

Thanks for having me. I'm  super excited to be here. And like you said, it's very cool to be the first student  collaborator that you featured on the   show. So I'm 18. I just graduated high school  a few months ago, and I will be attending the   University of Michigan's College of Engineering  in the fall. If you know me personally,   you know that I love robotics. I competed in the  FIRST Tech Challenge all throughout high school.  

The FIRST Tech Challenge is a student robotics  competition. There is the FIRST Tech Challenge,   FIRST Robotics Competition, and FIRST LEGO League.  So it's, like, three different levels of robotics   competition, which is run all around the world.  And every year, there's, like, a championship at   the end to declare a winner. And I plan to major  in either robotics or mechanical engineering. So   more about Avenues. Avenues is a K-through-12  international immersion school, which is very  

interesting. So younger students might do a day in  Spanish and a day in English or a day in Mandarin   and then a day in English, going through all their  classes in that language. So I actually attended   Avenues since second grade, so when I was younger,  I would do a full day in Spanish and then I would   switch to a full day in English, doing my courses  like math, history, English, all in my language,  

Spanish for me. And Avenues is a very interesting  school and very different in many ways. They like   to, sort of, think outside the box. There's a  lot of very unique classes, unique programs.   A great example is what they call J-Term or  June and January Term, which is where students   will have one course every day for the entire  month where they can really dive deep into that  

subject. And I was actually lucky enough to do  the Golden Record for a full month in 11th grade,   which I'll talk about this more, but that's  actually when I first made contact with Dr.   Black and found this amazing technology,  which is, I guess why we're all here today.

HUIZINGA

Right.

GREENE

So, yeah, there's many  really cool parts about Avenues. There's travel programs that you can do where  you can go all around the world. You can go   between different campuses. There's online  classes that you can take. The list goes on …

HUIZINGA

Well, it's funny that you say “when  I first made contact with Dr. Black” because it sounds like something that you're working on!  So let's talk about that for a second. So the   project we're talking about today is Avenues  Golden Record, but it's not the first Golden  

Record to exist. So for those of our listeners  who don't know what Golden Record even is, Dexter,   give us a little history lesson and  chronicle the story from the original   Golden Record way back in 1977 all the way  to what you're doing today with the project.

GREENE

Yeah. So I guess let me start with,  what is the Golden Record? So the original Golden Record is … I like to think of it as, sort  of, a time capsule of humanity that was designed   to represent us—who we are as a species, what we  love, why we love it, what we do, and, sort of,   our diversity, why we're all different, why we do  different things—to possible extraterrestrials.   And so the Golden Record was produced in 1977  by a relatively small team led by Carl Sagan[1],  

an American astronomer who was a professor at, I  believe, Cornell. And so it's basically a series   of meticulously curated content. So that could  be images, audios, sounds of nature, music,   the list goes on. Really anything you can think  of. That's, sort of, the beauty of it. Anything   can go on it. So it's just a compilation  of what we are, who we are, and why we   are—what's important to us. A great example,  one of my favorite parts of the Golden Record,  

is one of the first audios on it is a greeting in  55 languages. It's, sort of, meant to be, like,   a welcome … I guess less of a welcome, but more  like a hello because we're not welcoming anyone   to Earth, [LAUGHTER] but it's, like, a hello,  nice to meet you, in 55 languages to show that   we're very diverse, very different. And, yeah,  you can actually … if you're interested and if   you'd like to learn more, you can actually  go see all the content that's on the Golden  

Records. NASA has a webpage for that. I definitely  recommend if you have a chance to check it out.

HUIZINGA

Yeah.

GREENE

And I guess moving on to future  attempts … so what we're doing, my team, is we're working on creating an updated Golden  Record. So it's been 47 years now since the   original Golden Record—kind of a long time. And  of course a lot's changed. Some for the better,   some for the worse. And we think that it's  about time we update that. Update who we are,   what we are, and what we care about, what we love.

HUIZINGA

Right.

GREENE

So our team has begun working on that.  One project that I'm familiar with, other than our own, that's, sort of, a similar attempt  is known as Humanity's Message to the Stars,   which is led by Dr. Jonathan Jiang, who  is a researcher at NASA's Jet Propulsion   Laboratory.[2] Very cool. That's the only  project that's similar that I'm aware of,   but I'm sure there have been  other attempts in the past.

HUIZINGA

Yeah … just to make a note right  now, we're using the term “record,” and the original medium was actually a record, like an  LP. But excitingly, we'll get to why Dr. Black   is on the show today [LAUGHS] and talk  about the new media. Before we do that,   as I was preparing this episode, it began to  feel like a story of contrasting couplets,   like earthlings and aliens, content and  media, veteran researcher and high school  

student. … So let's talk about the last  pairing for a second, the two of you,   and how you got together on this project. It's  a fun story. I like to call this question “how   I met your mother.” So how did a high  school kid from New York come to be a   research collaborator with a seasoned scientist  from Cambridge? Dexter, tell your side of the   story. It's cool. And then Richard can  fill in the blanks from across the pond!

GREENE

Yeah, so let me actually  rewind a little bit further than that, about how I got into the project myself, …

HUIZINGA

Good!

GREENE

… which, I think, is a pretty fun  story. So one of my teachers—my design and engineering teacher at the time, Mr.  Cavalier—gave a presentation at one   of our gradewide assemblies. And the first  slide was something along the lines of “the   most challenging project in human history,”  which immediately caught my eye. I was like,   I have to do this! There's no way I'm not doing  this project! [LAUGHTER] And the slides to come of  

course made me want to partake in the project even  more. But that first slide … really, I was sold.   It was a done deal! So I applied to the project. I  got in. And then we began working and researching,   and I'll talk about this more later, as well,  but we, sort of, split up into two teams at  

the beginning

content and media. Media being  the form, or medium, that we send it on. And so that was the team that I was on. And I began  researching different storage methods and,   sort of, advancements in storage methods since  the original Golden Record in 1977. And I began   to realize that we hadn't made that much headway  in storage since then. Of course we've made   progress but nothing really spectacular until I  found 5D storage. And I was immediately, just,  

amazed by the longevity, durability, capacity—so  many things. I mean, there's just so many reasons   to be amazed. But … so I began researching and  I noticed that there were only two real places   that I could find information about this. One  was the University of Southampton, I believe,   and one was Project Silica at Microsoft. And so  I actually reached out to both. I reached out   to the University of Southampton and Dr. Black,  and somehow, [LAUGHS] kind of, to my surprise,  

Dr. Black actually responded! And I was, kind  of, stunned when he responded because I was like,   there's no way this researcher at Microsoft  is going to respond to this high school   student that he's never met in the middle  of nowhere. So when Dr. Black did respond,   I was just amazed and so excited. And, yeah,  it went from there. We began communicating   back and forth. And then, I believe, we met once  over the following summer, and now we're here!

HUIZINGA

OK, there's so many parallels right  now between this communication contact and what you're doing with potential extraterrestrial  intelligence. It's like, I contacted him,   he contacted me back, and then we started  having a conversation. … Yeah, so, Richard,   you were the guy who received the cold email from  this high school student. What was your reaction,   and how did you get interested in pursuing a  relationship in terms of the science of this?

BLACK

Yeah, so let me say I was really intrigued  by the Avenues Golden Record application. I do get quite a lot of cold emails, [LAUGHTER] and I try  to reply to most of them. I do have a few canned  

answers because I don't have time to interact  with everybody who reaches out to me. But I   was in particularly intrigued by the Avenues  Golden Record application because I could see   it was an application not just where Silica  was a better media than what people use today   but really where Silica was the only media  that would work because none of the standard   media really work over the kind of time scales  that are involved in space travel, and none of  

them really work in the harsh environments that  are involved in space and outer space and space   travel. So in some ways for me, it was an easy  way to communicate just what a transformative   digital media technology Silica is, and that's why  as an application it really grabbed my interest.

HUIZINGA

So did you have any idea  when the initial exchange happened that this would turn into a full-blown project?

BLACK

I didn't know how much time Dexter and  his fellow students would have to invest in it. So for me, at the beginning, I was just quite  happy to answer a few questions that they have,   to point them in the right direction, to fill  in a few blanks, and things like that. And it   was only much later, I think, after perhaps  we'd had our first meeting, that I realized   that Dexter and his team were actually serious,  [LAUGHTER] and they had some time, and they were  

going to actually invest in this and think it  through. And so I was happy to work with them   and to continue to answer questions that they had  and to work towards actually, you know, writing a   couple of Silica platters with the output that  they were creating and providing it for them.

HUIZINGA

Well, let's dig in there. Richard, let's  talk about digital data and the storage mediums that love it. I want to break this into two parts  because I'm interested in it from two angles. And   the first one is purely technical. I'll take a  second to note that we did an episode on Project   Silica way back in 2019. I say way back, like …  but in technical years right now, [LAUGHS] that   seems like a long time! And on that episode,  your colleague Ant Rowstron talked with me  

and Mark Russinovich, the CTO of Microsoft's  Azure. So we'll put a link in the show notes   for that super-fun, interesting show. But right  now, Richard, would you give our listeners an   overview of the current science of data on  glass? What is Silica? How is it different   from other storage media? And what's changed in  the five years since I talked to Ant and Mark?

BLACK

Sure. So Silica is an archival  storage technology that stores data inside fused silica glass. And it does that using  ultrashort laser pulses that make a permanent,   detectable, and yet transparent modification   to the glass crystal, so the data ends up  as durable as the piece of glass itself.

HUIZINGA

Wow.

BLACK

And being transparent means that we can  get hundreds of layers of data inside a block of glass that's only two millimeters thin,  making for really incredibly high densities.   And since this new physics was discovered at the  University of Southampton in the UK, we've been   working to tame that, and we've improved density,  energy over a hundred-fold in the time period   that we've been working on it, and the speed  over ten thousand-fold. And we continue to,  

in our research, to make Silica better and faster.  And, yes, you're right, five years might seem like   quite a long time. A comparison that you might  think of here is the history of the hard drive. In   the history of the hard drive, there was a point  in history at which humans discovered the physical   effect of magnetism. And it took us actually quite  a long time as a species to go from magnetism to  

hard drives. In this case, this new physical  effect that was discovered at Southampton,   this new physical effect, you can think of it a  bit like discovering magnetism, and taking it all   the way from there to actually a real operating  storage system actually takes quite a lot of   research and effort and development, and that's  the path that we've been on doing that, taming and   improving densities and speeds and energies  and so on during the years of the project.

HUIZINGA

Well, talk a little bit more  about the reading and writing of this medium. What's involved technically on how  you get the data on and how you retrieve it?

BLACK

Yeah, and so interestingly the writing of  the data and the reading of the data are actually completely different. So writing the data is done  with an ultrashort laser pulse. It's actually a   femtosecond-length pulse, and a femtosecond is  one-thousandth of one-millionth of one-millionth  

of a second. And if you take even quite a small  amount of energy and you compress it in time into   a pulse that short and then you use a lens  to focus it in space into just a tiny point,   then the intensity of the light at that point  during that pulse is just so mind-bogglingly  

high that you actually get something called a  plasma-induced nano-explosion. [LAUGHTER] And   I'm not an appropriate physicist of the right  sort by background, but I can tell you that   what that does is it really transforms the glass  crystal at that point but in a way in which it’s,   just, it’s so short—the time pulse is so  short—it doesn't really get to damage the  

crystal around that point. And that's what  enables the data to be incredibly durable   because you've made this permanent, detectable,  and yet transparent change to the glass crystal.

HUIZINGA

So that's writing. What about reading?

BLACK

Reading you do with a microscope!

HUIZINGA

Oh, my gosh.

BLACK

So it's a much more straightforward  process. A reader is basically a computer-controlled, high-speed, high-quality  microscope. And you focus the microscope at   an appropriate depth inside the glass, and  then you just photograph it. And you get to,   if it's an appropriate sort of microscope,  you get to see the changes that you've made  

to the glass crystal. And then we process those  images, in fact, using machine learning neural   networks to turn it back into the data that  we'd originally put into the glass platter.   So reading and writing quite different. And on  the reading, we're just using regular light,   so the reading process can't possibly damage  the data that's been stored inside the glass.

HUIZINGA

I imagine you wouldn't want to get  your eye in the path of a femtosecond laser …

BLACK

Yes, femtosecond lasers are not for  use at home! That's quite true. In fact, your joke comment about the eye is  … eye surgery is also actually done   with femtosecond lasers. That's  one of the other applications.

HUIZINGA

Oh, OK! So maybe you would!

BLACK

But, yes, no, this is  definitely something that, for many reasons, Silica is something  that's related to cloud technology,   the writing process. And I think we'll get  back to that perhaps later in our discussion.

HUIZINGA

Yeah, yeah.

BLACK

But, yeah, definitely  not something for the home.

HUIZINGA

How powerful is the  microscope that you have to use to read this incredibly small written data?

BLACK

It's fairly straightforward  from a power point of view, but it has been engineered to  be high-speed, high-quality,   and under complete computer control that enables  us to move rapidly around the piece of glass   to wherever the data is of interest and then  image at high speed to get the data back out.

HUIZINGA

Yeah. Well, so as you describe it, these amazingly tiny laser pulses store  zettabytes of data. Talk for one second,   still technically, about how you find and extract  the data. You know, I've used this analogy before,   but at the end of the movie Indiana Jones, the Ark  of the Covenant is stored in an army warehouse.   And the camera pulls back and there's just box  after box after crate after crate. … It's like,  

you'll never find it. Once you've written and  stored the data, how do you go about finding it?

BLACK

So like all storage media, whether it be  hard drive, tape, flash that might be in your phone in your pocket, there are standard indexing  methods. You know, there's an addressing system,   you know, blocks and sectors and tracks.  And, you know, we use all of these, kind of,   standard terminology in terms of the way we  lay the data out on the glass, and then each  

piece of glass is uniquely identified, and the  glass is stored in the library. And actually,   we've done some quite interesting work and novel  work on the robotics that we use for handling and   moving the pieces of glass in Silica. It's  interesting Dexter is talking about being   interested in robotics. We've done a whole bunch  of new interesting robotics in Silica because we   wanted the shelving or the library system that we  keep the glass on to last as long as the glass.  

And so we wanted it to be completely passive.  And we wanted all of the, kind of, the active   components to be in the robotics. So we have these  new robots that we call shuttles that can, kind   of, climb around the library and retrieve the bits  of glass that are needed and take them to a reader   whenever reading is needed, and that enables us  really to scale out a library to enormous scale   over many decades or centuries and to just keep  growing a passive, completely passive, library.

HUIZINGA

Yeah, I saw a video of the retrieval and  it reminded me of those old-fashioned ladders in libraries where you scoot along and you're  on the wall of books and this is, sort of,   like the wall of glass. … So, Richard,  part two. Let's talk about Silica from   a practical point of view because  apparently not all data is equal,   and Silica isn't for everyone's data all the  time. So who are you making this for generally  

speaking and why? And did you have aliens  on your bingo card when you first started?!

BLACK

So, no, I didn't have aliens [LAUGHTER] on  the bingo card when I first started, definitely not. But as I mentioned, yeah, Project Silica is  really about archival data. So that's data that   needs to be kept for many years—or longer—where  it's going to be accessed infrequently,   and when you do need to access it, you don't need  it back instantaneously. And there's actually a   huge and increasing amount of data that fits  those criteria and growing really very rapidly.  

Of course it's not the kind of data that you keep  in your pocket, but there is a huge amount of it.   A lot of archival records that in the past  might have been generated and kept on paper,   they're now, in the modern world, they're all born  digital. And we want to look for a low-cost- and   low-environment-footprint way of really keeping  it in that digital format for the length of time   that it needs to be kept. And so Silica is  really for data that's kept in the cloud,  

not the pocket or the home or the business.  Today most organizations already use the cloud   for their digital data to get advantages of  cost, sustainability, efficiency, reliability,   availability, geographic redundancy, and so  on. And Silica is definitely designed for that   use case. So archival data in the cloud, data  that needs to be kept for a long time period,   and there’s huge quantities of  it and it's pouring in every day.

HUIZINGA

So concrete example.  Financial data, medical data, I mean, what kinds of verticals or  sectors would find this most useful?

BLACK

Yeah, so the financial industry, there's  a lot of regulatory requirements to keep data. Obviously in the healthcare situation, there's  a lot of general record keeping, any archives,   museums, and so on that exist today. We see  a lot of growth in things like the extractive   industries, any kind of mining. You want  to keep really good records of what it was  

that you did to, you know, did underground or  did to the earth. The media and entertainment   industry is one where they create a lot of  content that needs to be kept for long time   periods. We see scientific research studies  where they measure and accumulate a large   quantity of data that they want to keep  for future analysis, possibly, you know,   use it later in training ML models or just  for future analysis. Sometimes that data  

can't be reproduced. You know, it represents a  measurement of the earth at some point and then,   you know, things have changed and it wouldn't  be possible to go back and recapture that data.

HUIZINGA

Right.

BLACK

We see stuff in government and local  government. One example is we see some local

governments who want, essentially, to create  a digital twin of their city. And so when new   buildings are being built, they want to keep the  blueprints, the photographs of the construction   site, all of the data about what was built from  floor plans and everything else that would help   not only emergency services but just help the  city in general to understand what's in its   environment, and they want all of that to be  kept while that building exists in their city.  

So there's lots and lots and lots of growing data  that needs to be kept—sometimes for legal reasons,   sometimes for practical reasons—lots of it a  really fast-growing tier within the data universe.

HUIZINGA

Yeah. Dexter, let's go  back to you. On the Avenues website, it says the purpose of the Golden Record is to,  as you mentioned before, “represent humanity   and Earth to potential extraterrestrial beings,  encapsulating our existence through a collection   of visuals and sounds.” That's pretty similar to  the first Golden Record's mission. But yours is  

also different in many ways. So talk about  what's new with this version, not just the   medium but how you're going about putting things  together, both conceptually and technically.

GREENE

Yeah. So that's a great question. I  can take it in a million different directions. I'll start by just saying of course the new  technology that Dr. Black is working on is, like,   the biggest change, at least in my view, because  I like this kind of stuff. [LAUGHTER] But that's   like really the huge thing—durability, longevity,  and capacity, capacity being one of the main   aspects. We could just fit so much more content  than was possible 50 years ago. But there's a  

lot more. So on the original Golden Record, they  only had weeks to work on the project before it   had to be ready to go, to put on the Voyager 1 and  2 spacecrafts. So they had a huge time constraint,   which of course we don't have now. We've got as  much time as we need. And then … I'll talk about   how we've been working on the project. So we  split up into two main teams, content and form.  

Form being media, which I, like I said earlier, is  the team that I work on. And our content team has   been going through loads of websites and online  databases, which is another huge difference. When   they created the original Golden Record 50 years  ago, they actually had to look through books and,   like, photocopy each image they wanted. Of course  now we don't have to do that. We just find them  

online and drag and drop them into a folder.  So there's that aspect, which makes it so much   easier to compile so much content and good-quality  content that is ethically sourced. So we can find   big databases that are OK with giving us their  data. Diversity is another big aspect that we've   been thinking about. The original Golden Record  team didn't have a lot of time to really focus on   diversity and capturing everything, the whole  image of what we are, which is something that  

we've really been working on. We're trying to  get a lot of different perspectives and cover   really everything there is to cover, which is why  we actually have an online submission platform on   our website where any random person can take an  image of their cat that they like [LAUGHTER] or   an image of their house or whatever it may be  and they can submit that and it will make its   way into the content and actually be part of the  Golden Record that we hopefully send to space.

HUIZINGA

Right. So, you know, originally, like  you say, there's a sense of curation that has to happen. I know that originally, they chose  not to include war or conflict or anything   that might potentially scare or frighten any  intelligence that found it, saying, hey, we're not   those people. But I know you've had a little bit  different thinking about that. Tell us about it.

GREENE

Yeah, so that's something that we've  talked about a lot, whether or not we should include good and bad. It's funny. I actually  wrote some of my college essays about that,   so I have a lot to say about it.  I'll just give you my point of view,   and I think most of my team shares the same point  of view. We should really capture who we are with   the fullest picture that we can without leaving  anything out. One of the main reasons that I feel  

that way is what might be good to us could be  bad to extraterrestrials. So I just don't think   it's worth it to exclude something if we don't  even know how it's perceived to someone else.

HUIZINGA

Mm-hmm. So back to the space  limitations, are you having to make choices for limiting your data, or are you just  sort of saying, let's put everything on?

GREENE

So on the original Golden Record,  of course they really meticulously curated everything that went on the record  because there wasn't that much space.

HUIZINGA

Yeah ...

GREENE

So they had to be very careful  with what they thought was worth it or not. Now that we have so much space, it  seems worth it just to include everything   that we can include because maybe they see  something that we don't see from an image.

HUIZINGA

Right.

GREENE

The one thing that we … at the very  beginning, during my J-term in 11th grade, we were actually lucky enough to have Jon  Lomberg[3], one of the members of the original   team, come in to talk to us a bit. And he gave us  a, sort of, a lesson about how to choose images,   and he was actually the one that chose a lot  of the images for the original record. So it  

was really insightful. One thing we talked a  lot about was, like, shadows. A shadow could be   very confusing and, sort of, mess up how they  perceive the image, but it also might just be   worth including because, why not? We can include  it, and maybe they get something … they learn   about shadows from it even though it's confusing.  So that's, sort of, how we have thought about it.

HUIZINGA

Well, that's an interesting segue,  because, Richard, at this point, I usually ask what could possibly go wrong if you got everything  right. And there are some things that you think,   OK, we don't know. Even on Earth, we have  different opinions about different things.   And who knows what any other intelligence  might think or see or interpret? But,   I want to steer away from that question  because when we talked earlier, Richard,  

I was intrigued by something you said, and I  want you to talk about it here. I'll, kind of,   paraphrase, but you basically said, even if  there's no intelligent life outside our planet,   this is a worthwhile exercise for  us as humans. Why'd you say that?

BLACK

Well, I had two answers to that, one, kind  of, one selfish and one altruistic! [LAUGHTER] I talk to a lot of archival data users, and  those who are serious about keeping their   data for many hundreds of years, they  think about the problem in, kind of,   three buckets. So one is the keeping of the bits  themselves. And of course that's what we are   working on in Project Silica and what Silica  is really excellent at. One is the metadata,  

or index, that records what is stored, where  it's stored, and so on. And that's really the   provenance or the remit of the archivist  as curator. And then the third is really   ensuring that there's an understanding of how  to read the media that persists to those future   generations who’ll want to read it. And this  is sometimes called the Rosetta Stone problem,   and that isn't the core expertise of me or  my team. But the Golden Record, kind of,  

proves that it can be solved. You know, obviously,  humanity isn't going to give up on microscopes,   but if we can explain to extraterrestrials how  they would go about reading a Silica platter,   then it should be pretty obvious that we can  explain to our human descendants how to do so.

HUIZINGA

Hmmm.

BLACK

The altruistic reason is that I think  encouraging humanity to reflect on itself—where we are, the challenges ahead for us as a species  here on planet Earth—you know, this is a good time   to think those thoughts. And any time capsule—and  the Golden Record, you can, kind of, view it a bit   like a time capsule—it's a good time to step  back and think those philosophical thoughts.

HUIZINGA

Dexter, do you have any  thoughts? I know that Dr. Black has, kind of, taken the lead on that, but I wonder  if you've given any thought to that yourself.

GREENE

Yeah, we've given a lot of thought  to that: even if the record doesn't reach extraterrestrials, is it worth it? Why are  we doing this? And we feel the exact same   as Dr. Black. It's so worth it just for us to  reflect on where we are and how we can improve   what we've done in the past and what we can do in  the future. It's a … like Dr. Black said, it's a   great exercise for us to do. And it's exciting.  One of the beautiful parts about this project is  

that there's no, like, right or wrong answer.  Everyone has a different perspective on it.

HUIZINGA

Yeah …

GREENE

And I think this is a  great way to think about that.

HUIZINGA

Yeah. So, Dexter, I always ask my  collaborators where their project is on the spectrum from lab to life. But this research is  a bit different from some of the other projects   we featured. What is the, sort of, remit of your  timeline? Is there one for completing the record   in any way? Who, if anyone, are you accountable  to? And what are your options for getting it up   into space once it's ready to go? Because there  is no Voyager just imminently leaving right now,  

as I understand it. So talk a little bit  about the scope from lab to life on this.

GREENE

Yeah. So, like you said, we don't  really have an exact timeline. This is, sort of, one of those projects where we could  compile content forever. [LAUGHTER] There's   always more content to get. There's always  more perspectives to include. So I could do   this forever. But I think the goal is to try  and get all the content and get everything   ready within the next couple years. As for  who we're accountable to, we're, sort of,  

just accountable to ourselves. The way we've  been working on this is not really like a club,   I wouldn't say, more just like a passion  project that a few students and a few teachers   have taken a liking to, I guess. So we're just  accountable to ourselves. We of course, like,   we have meetings every week, and my teacher was  the one that, like, organized the meetings. So   I was, sort of, accountable to my teacher  but really just doing it for ourselves.

HUIZINGA

Mm-hmm.

GREENE

As for getting it up into space, we  have been talking a bit with the team led by Dr. Jiang. So ideally, in the future,   we would collaborate more with them and  [LAUGHS] go find our ticket to space on a   NASA spaceship! But there are of course other  options that we've been looking at. There's   a bunch of space agencies all around the world.  So we're not just looking at the United States.

HUIZINGA

Well, there's also private  space exploration companies …

GREENE

Yeah, and there's also private  space like SpaceX and etc. So we've thought about all of that, and we've been  reaching out to other space agencies.

HUIZINGA

I love that “ticket to outer space”  metaphor but true because there are constraints on what people can put on, although  glass of this size would be pretty light.

GREENE

I feel the same way. You do  have to get, like, approved. Like, for the original Golden Record, they  had to get everything approved to make   it to space. But I would think that it  would be pretty reasonable—given the   technology is just a piece of glass,  essentially, and it's quite small,   the smallest it could be, really—I would think  that there wouldn't be too much trouble with that.

HUIZINGA

So, so … but that does lead to a  question, kind of, about then extracting, and you've addressed this before by kind  of saying, if the intelligence that it   gets to is sophisticated enough,  they'll probably have a microscope,   but I'm assuming you won't include a  microscope? You just send the glass?

GREENE

Yeah. So on the original record, they actually included a … I'm not sure what  it's called, but the device that you need to …

HUIZINGA

A phonograph?

GREENE

… play a rec … yeah, a phonograph, yes.  [LAUGHTER] So they include—sorry! [LAUGHS]—they included a phonograph [cartridge and stylus]  on the original Voyagers. And we've thought   about that. It would probably be too difficult  to include an actual microscope, but something   that I've been working on is instructions  on not exactly how to make the microscope   that you would need but just to explain,  “You're going to need a microscope,  

and you're going to need to play around with  it.” One of the assumptions that we've made is   that they will be curious and advanced.  I mean, to actually retrieve the data,   they would need to catch a spaceship  out of the sky as it flies past them …

HUIZINGA

Right!

GREENE

… which we can't do at the moment. So  we're assuming that they're more advanced than us, curious, and would put a lot of  time into it. Time and effort.

HUIZINGA

I always find it interesting that  we always assume they're smarter than us or more advanced than us. Maybe they're  not. Maybe it's The Gods Must Be Crazy,   and they find a computer and they start banging it  on a rock. Who knows? Richard, setting aside any   assumptions that this Golden Record on glass makes  it into space and assuming that they could catch   it and figure it out, Silica's main mission is  much more terrestrial in nature. And part of that,  

as I understand it, is informing the next  generation of cloud infrastructure. So   if you could, talk for a minute about the  vision for the future of digital storage,   particularly in terms of sustainability, and  what role Silica may play in helping huge   datacenters on this planet be more efficient  and maybe even environmentally friendly.

BLACK

Yes, absolutely. So Microsoft is  passionate about improving the sustainability of our operations, including data storage. So  today archival data uses tape or hard drives,   but those have a lifetime of only a few years,  and they need to be continually replaced over   the lifetime of the data. And that contributes to  the costs both in manufacturing and it contributes  

to e-waste. And of course, those media also  can consume electricity during their lifetime,   either keeping them spinning or in the careful  air-conditioning that's required to preserve   tape. So the transformative advantage of Silica is  really in the durability of the data permanently   stored in the glass. And this allows us to move  from costs—whatever way you think about cost,   either money or energy or a sustainability  cost—move from costs that are based on the  

lifetime of the data to costs that are based on  the operations that are done to the data. Because   the glass doesn't really need any cost while it's  just sitting there, while it's doing nothing. And   that's a standout change in the way we can think  about keeping archival data because it moves from,   you know, a continual, as it were, monthly cost  associated with keeping the thing over and over  

and over to, yeah, you have to pay to write. If  you need to read the data, you have to pay the   cost to read the data. But in the meantime,  there's no cost to just keeping it around in   case you need it. And that's a big change. And so  actually, analysis suggests that Silica should be   about a factor of 10 better for sustainability  over archival time periods for archival data.

HUIZINGA

And I would imagine “space” is a  good proof of concept for how durable and how long you expect it to be able  to last and be retrieved. Well …

BLACK

Absolutely. You know, Dexter mentioned  the original Golden Record had to get a, kind of, approval to be considered space-worthy.  In fact, the windows on spacecraft that   we use today are made of fused silica  glass. So the fused silica glass is   already considered space-worthy! You know,  that's a problem that's already solved. And,   you know, it is known to be very robust  and to survive the rigors of outer space.

HUIZINGA

Yeah, and the large datacenter! Well,  Dexter, you're embarking on the next journey in your life, heading off to university this  fall. What are you going to be studying,   and how are you going to keep  going with Avenues' Golden Record   once you're at college because you don't  have any teachers or groups or whatever?

GREENE

Yeah, that's a great question. So,  like I said, I plan to major in robotics engineering. That's still, I guess, like,  TBD. I might do mechanical engineering,   but I'm definitely leaning more towards robotics.  And as for the project, I definitely want to   continue work on the project. That's something  I've made very clear to my team. Like you said,   like, I won't have a teacher there with me, but  one of the teachers that works on the project was  

my physics teacher last year, and I've developed  a very good relationship with him. I can say for   sure that I'll continue to stay in touch with him,  the rest of the team, and this project, which I'm   super excited to be working on. And I think we're  really … we, sort of, got past the big first hump,   which was like the, I guess, the hardest part, and  I feel like it will be smooth sailing from here!

HUIZINGA

Do you think any self-imposed  deadlines will help you close off the process? Because I mean, I could see this going  … well, I should ask another question. Are there   other students at Avenues, or any place else, that  are involved in this that haven't graduated yet?

GREENE

Yes, there are a few of us. Last  year when we were working on the project, there were only a handful of us. So it was me  and my best friend, Arthur Wilson, who also   graduated. There were three other students. One  was a ninth grader, and two were 10th graders.   So they're all still working on the project. And  there's one student from another campus that's   still working very closely on the project. And  we've actually been working on expanding our team  

within our community. So at the end of last year,  we were working on finding other students that we   thought would be a great fit for the project  and trying to rope them into it! [LAUGHTER] So   we definitely want to continue to work on the  project. And to answer your question from before   about the deadlines, we like to set, sort of,  smaller internal deadlines. That's something that  

we've gotten very used to. As for a long-term  deadline, we haven't set one yet. It could be   helpful to set a long-term deadline because if  we don't, we could just do the project forever.

HUIZINGA

[LAUGHS] Right …

GREENE

We might never end because  there's always more to add. But yeah, we do set smaller internal deadlines, so like  get x amount of content done by this time,   reach out to x number of space agencies,  reach out to x number of whatever.

HUIZINGA

Mm-hmm. Yeah, it feels  like there should be some kind of, you know, “enough is enough” for this round.

GREENE

Yeah.

HUIZINGA

Otherwise, you're the artist who  never puts enough paint on the canvas and …

GREENE

I also really like what you said just  now with, like, “this round” and “next round.” That's a very good way to look at it. Like  Dr. Black said, he produced two platters for  

us already towards the end of my last school  year. And I think that was a very good, like,   first round and a good way to continue doing the  project where we work on the project and we get   a lot of content done and then we can say, let's  let this be a great first draft or a great second   draft for now, and we have that draft ready to go,  but we can continue to work on it if we want to.

HUIZINGA

Well, you know the famous  computer science tagline “Shipping is a feature.” [LAUGHS] So there's  some element of “let's get it   out there” and then we can do the next  iteration of upgrades and launch then.

GREENE

Exactly.

HUIZINGA

Well, Richard, while most people don't  put scientists and rock stars in the same bucket, Dexter isn't the first young  person to admit being a little   intimidated—and even starstruck—by an  accomplished and well-known researcher,   but some students aren't bold enough to cold  email someone like you and ask for words of  

wisdom. So now that we've got you on the show,  as we close, perhaps you could voluntarily   share some encouraging words or direction  to the next generation of students who are   interested in making the next generation of  technologies. So I'll let you have the last word.

BLACK

Oh, I have a couple of small things to  say. First of all, researchers are just people, too. [LAUGHTER] And, you know, they like others  to talk to them occasionally. And usually,   they like opportunities to be passionate about  their research and to communicate the exciting   things that they're doing. So don't be put  off; it's quite reasonable to talk. You know,   I'm really excited by, you know, the, kind of,  the passion and imagination that I see in some  

of the young people around today, and Dexter and  his colleagues are an example of that. You know,   advice to them would be, you know, work on a  technology that excites you and in particular   something that, if you were successful, it  would have a big impact on our world and,   you know, that should give you a kind of  motivation and a path to having impact.

HUIZINGA

Hmm. What you just said  reminded me of a Saturday Night Live skit with Christopher Walken—it's  the “More Cowbell” skit—but he says,   we're just like other people; we  put our pants on one leg at a time,   but once our pants are on, we make gold  records! I think that's funny right there!

[MUSIC]

HUIZINGA

Richard and Dexter, thank you so  much for coming on and sharing   this project with us today on  Collaborators. Really had fun!

GREENE

Yeah, thank you so much for having us.

BLACK

Thank you.

[MUSIC FADES]

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