Feature request: single step. The only way I can slow it down enough to explain it to my kids is to stop it, and it stops in random (usually mangled) states. I wish I could single step it.
Indeed, the Arrowhead of Minnesota and Isle Royale are farther from the nearest U.S. McDonald's, as the crow flies, but they're only about fifty miles from the Micky Dee's in Thunder Bay, Ontario.
http://www.datapointed.net/visualizations/math/factorization...