Random is random
If you all haven’t heard yet, iPod’s random feature is really random. MSNBC News ran an article investigating the randomness of the iPod. Apple basically chalks up all the hoopla to people only listening to th e first few songs of the random set. Or better yet, “We often interpret and impose patterns on random processes.”
Apple execs profess amusement. “It’s part of the magic of shuffle,” says Greg Joswiak, the VP for iPod products. Still, I asked him last week to double-check with the engineers. They flatly assured him that “Random is random,” and the algorithm that does the shuffling has been tested and reverified.
More specifically, when an iPod does a shuffle, it reorders the songs much the way a Vegas dealer shuffles a deck of cards, then plays them back in the new order. So if you keep listening for the week or so it takes to complete the list, you will hear everything, just once. But people generally listen only to the first few dozen songs. In theory, that sample should be evenly distributed among all the artists and albums in their collections. So why do you typically get three Wilco songs in an hour while Aretha Franklin waits in the wings forever?