Look at your hand. If you are male and your index (2nd) finger is longer than your ring (4th) finger, you are a testosterone-driven manimal, and likely to be a successful financial trader.

More info can be found on Tim Harford’s site.

Meanwhile, on the radio this morning I heard someone being described as “…a person whose father stays up all night going through his birth records looking for a loophole”.

Man, that’s gotta hurt!