Probability is something else. I consider myself fairly good at understanding it. I like to think (to myself) I'm in the 95th percentile in the world in underst

Probability is something else. I consider myself fairly good at understanding it. I like to think (to myself) I'm in the 95th percentile in the world in understanding probability. Yet these 4 concepts will regularly throw me off: http://tempr.org/54f9f429588f8.html http://tempr.org/54f9f429588f8.html