Thanks, I just read in his blog the post "beware the man of one study". Discussing if rising minimum wage hurts the economy give rise to 270 comments. I agree with the conclusion: Even if someone give you overwhelming evidence in favor of a certain point of view just wait and see if the opposite side has equally overwhelming evidence. My example: This coin came 7000 times heads so almost always gives head. Just wait and count how many times it came tails.