Here he gets into his prognostication track record:
Update: Oh, wow — I’ve only had time to skim the underlying paper (pdf), but here’s what it says, based on evidence, about what makes a good prognosticator:
Perhaps most importantly, being a good prognosticator seems to be a product of choices, not birth. Anyone can be good; all they need to do is avoid law school and buy into liberalism as an overarching philosophy.
No surprise here. We all know that reality has a liberal bias. (5:10 at the vid.)
Fortunately, I also avoided law school (though I did get a damned MBA.)