Animated walkers

It's silly how easy it is to get started with animation in Processing. All that was required was for me to move my code from a method I named to one called draw and to comment out the call to the method I named. The results are immediate. 

Although I am probably not going to spend a lot more time working on pictures, and I know that Processing is Java underneath, nobody is going to convince me quickly that we need to teach everyone the difference between paint, repaint and update...