Timothy Geithner

The major economic policy challenges facing the nation today - pick your favorites among the usual suspects of low public and household savings, concerns about educational quality and achievement, high and rising income inequality, the large imbalances between our social insurance commitments and resources - are not about monetary policy.

In the many-mansioned house of Alternate History, I occupy a small corner. The trio of what-ifs I chronicled in 'Then Everything Changed' all begin with tiny, highly plausible twists of fate that lead to hugely consequential shifts in history.

I usually feel like the role comes to you to sort of illuminate some piece of where you are in your life. I feel like I myself am a single woman and I'm childless - by choice - at this point, and I don't know what will happen.

There is this strange fog of being a young man that I would refer to as soft time. Time does not go forward there. It's a series of doors that kind of wind back into one another, like a series of doors in the upper floor of a house. You revisit the same lessons over and over again, or you choose to ignore them.