Stuart Firestein: The pursuit of ignorance

What does real scientific work look like? As neuroscientist Stuart Firestein jokes: It looks a lot less like the scientific method and a lot more like "farting around … in the dark." In this witty talk, Firestein gets to the heart of science as it is really practiced and suggests that we should value what we don’t know -- or “high-quality ignorance” -- just as much as what we know.