When Things Go Bad

Algorithms: what are they? And how can you use them to predict someone's exam results? Matt Chorley speaks to Timandra Harkness, journalist and author of 'Big Data: Does Size Matter?' to find out.

Timandra's shortly followed by Theresa May's former spokesman, Paul Harrison, and former Liberal Democrat adviser Sean Kemp who tell Matt what it's like to be in the eye of a political storm.

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