http://one.npr.org/?sharedMediaId=523772071:524301415

Interesting story on how Instagram was built.
I love the study 30 minutes into the episode (Ignorance for Dummies) about the less someone knows the less they know how little they know about it. “The Dunning-Kruger effect”
http://www.thisamericanlife.org/radio-archives/episode/585/in-defense-of-ignorance