Bayes Law wank
Mini-wank in debate.

raving_wolf posts about random drug testing using statistics that to people not familiar with statistics may seem wrong, but are correct. Bayes Law is not something most people can grasp very easily, so people complain loudly.

Dear people of the world,

testing postitive when something really is negative does not have the same probability as testing negative when something really is positive.

Thanks,
Rebecca

Oh, and it also made it into a _scientists_ thread.