This looks just like the C code on Paul Burke's page [1], except that the translation to JS isn't quite correct because x gets updated before yz are calculated

This looks just like the C code on Paul Burke's page [1], except that the translation to JS isn't quite correct because x gets updated before yz are calculated (and y before z) due to sequential parameter evaluation. And the 101 bytes conveniently doesn't count any of the rendering and other code. The result is still pretty, but that's a bit too much handwaving for my taste. [1] http://paulbourke.net/fractals/lorenz/ http://paulbourke.net/fractals/lorenz/