On Friday, [Robert] Shiller told me of a conversation he had with an economist friend of his. The man had spent his entire career advocating the efficient market hypothesis, which posits that all known information about a stock is already priced into it. But with the market in collapse, the economist sold all his stocks. “I feel like a Christian Scientist who has come down with appendicitis,” he told Mr. Shiller.
--Joe Nocera, NYT, on how deeply the efficient market hypothesis goes against our intuitions