Every American worker should be able to save for retirement via payroll deductions.

I think one lesson we have to learn is that there's a lot more risk than we're giving credit to, a lot more what economist calls systematic risk.

When an economist says the evidence is "mixed," he or she means that theory says one thing and data says the opposite.

If people just put away what's left at the end of the month, that's a recipe for failure.

Most people start claiming benefits within a year of when they become eligible, although benefits increase substantially if they wait.

Why tie to gold? Why not 1982 Bordeaux?

So the world is much more correlated than we give credit to. And so we see more of what Nassim Taleb calls "black swan events" - rare events happen more often than they should because the world is more correlated.