38: If it's not broken should you fix it?

Every developers wants to refactor all the things all the time. But is it always a sensible decision? How should you deal with "not invented here" syndrome (as much as a problem for programmers as it is for builders and carpenters and plumbers)? And how do you fight the urge to spend all your time fixing old code at the expense of creating something new? Find out all this and more in this week's refined instalment of A Question of Code.