My favourite explanation is a contest to guess how many jelly beans are in the jar. How can you win? - Get lucky - Have a data advantage (maybe you can measu

My favourite explanation is a contest to guess how many jelly beans are in the jar. How can you win? - Get lucky - Have a data advantage (maybe you can measure the dimensions of the jar accurately from afar - Have a modelling advantage (maybe you have a 3D model of a jar in a computer simulation)