Book Q&A: Patrick O’Shaughnessy probes Ben Carlson about his new book A Wealth of Common Sense.  (Investor’s Field Guide)

Quote of the Day

"..if you add even a little bit of the right kind of feedback into an economic system, it becomes unstable.

(Noah Smith)

Chart of the Day

Facebook ($FB) is now worth more than Wal-Mart ($WMT).