The fallacy of Backward Probability Calculation

Picture of Heath Ledger playing as the Joker character in The Dark Knight (2008) movie. He is holding a Joker card in his right hand while looking into the camera with a red smile carved on his face as in the movie.

By Eric Bright

Here is a simple puzzle for you with deep implications.

I have a deck of Bicycle cards with 52 cards plus two ? Jokers (a black and white and a coloured one), as well as one Bicycle ? introduction card, and an advertising card (56 cards in total).

I have been shuffling them for the past two months or so. Today, I got the following sequence of cards: read more...