Word games

摘要

One sunny Wednesday afternoon, I was sitting on a rooftop in Brooklyn with my friend Geoff Allman, watching pigeons and talking about computer programming. Geoff, a Flash designer and ActionScript programmer, was describing all the different movements that he would have to account for in order to realistically recreate, in digital form, the bird's flight: The pigeon's body moves up and down as its wings beat, and the wings themselves flex so much that the tips almost touch.