Andrew Lo: The best economics book I’ve read recently is Human: The Science Behind What Makes Us Unique by Michael Gazzaniga. Now it’s true that Gazzaniga is a cognitive neuroscientist, not an economist, but the insights in this book…

Question: Given the current size and concentration of financial activities in the hands of few financial institutions, wouldn’t antitrust laws apply to their activities? Are financial institutions exempt from anti-trust laws? Paul Solman: No, they’re not. But remember, the government…

Question: I read Robert Barro’s analysis of the net effectiveness of stimulus spending recently in the Wall Street Journal and clearly he concludes it’s not. Why is there not more public debate about this? What’s not being said?…

Question: Was Social Security doomed from its inception as it began by paying benefits to a generation that had never put anything into the fund? Paul Solman: No. It is a pay-as-you-go system, meaning future generations pay for current retirees.