How to Sort the Playing Cards

The way the i a t works is to simply ask people to sort things. So imagine that you're given a deck of playing cards, and you're asked to sort all the red cards to the left and all the black cards to the right. I'll predict that it will take you about twenty seconds to run through that deck. Next mazarin says, shuffle the deck and resort the cards. This time i'd like you to put all the spades and the diamonds to one side and the clubs and the hearts to the other side. And what we'll find is the this will take you nearly twice as long to do. Why? Because a rule that your brain had learned,...