ABOUT THE FIBONACCI SEQUENCE: The Fibonacci sequence was identified by an Italian also known as Leonardo of Pisa. His book from 1202 explained the sequence to Europeans, though it had been previously identified by Indian mathematicians. The sequence begins with 0, then 1, after which new numbers are made by adding the two previous numbers in the sequence (The sequence begins 0,1,1,2,3,5,8,13ý). It's useful in computer algorithms and financial analysis. It appears in biological structures and even in the curve of breaking waves.
ABOUT THE "ICE CREAM" TRICK: Some tricks use math and some use illusion. For the ice cream flavor trick, Mulcahy uses the techniques of a magician to shuffle the cards while keeping track of the location of the card that started on the bottom. By manipulating its position in each shuffle, it's easy enough to identify the identity of the card atop a seemingly randomly-arranged pile.