You're right, but it doesn't have to be uniform, and of course it can't be. It only needs to be everywhere positive. I wrote it up in more detail here: http:/

You're right, but it doesn't have to be uniform, and of course it can't be. It only needs to be everywhere positive. I wrote it up in more detail here: http://math.stackexchange.com/questions/655972/help-rules-of-a-game-whose-details-i-dont-remember/656426#656426 http://math.stackexchange.com/questions/655972/help-rules-of...