My recent devblog post on
repeatable random colors in javascript is slightly more clever than sometimes plus I get to quite John von Neumann: "Anyone who attempts to generate random numbers by deterministic means is, of course, living in a state of sin." (At my first programming job Paul Morville made a small sign of that, since he thought my protests along the lines of "this code can't POSSIBLY be doing that" had a whiff of that "from structure, chaos"...)