Yuval is always worth listening to.  Here he talks about his book Nexus, a discussion about how information networks work.

Yuval's main insight here is that more information doesn't lead to better decisions if people are unable to decipher good information from bad.  This is why the promise of the Internet seems to have remained unfulfilled.  Still, there is hope, and Yuval outlines some ways to fight against those who would like to "flood the zone".