We've been speaking about investment and stock market returns recently as an example of how forecasting is difficult. But I would be remiss not to mention Vanguard and it's very articulate founder. I've just finished reading his latest book (Enough) and it was very worth a couple of hours of time. A very thoughtful reflection on character and ethics.
I'm also hoping to emulate him in another way -- he is 91 years old and still active in what he loves. Here is hoping I'm still doing Epidemiology at the same age!