I made zeno's progress bar; it always keeps moving, but never quite finishes until you send it a :done: event, at which point it wastes half a second animating

I made zeno's progress bar; it always keeps moving, but never quite finishes until you send it a :done: event, at which point it wastes half a second animating the remainder of the progress bar. Never had a single complaint, and no one noticed that it had nothing to do with what was going on under the hood.