When I feel listless, I sometimes try to whet my brain by rubbing it on quantum mechanics, which requires math that's absurdly difficult for a dilettante to understand. For years I've tinkered at implementing a simulator for programming quantum computers and really haven't gotten anywhere. Well, now I can use André van Tonder's Scheme-based DSL for quantum computing. I really doubt that I'll ever understand it well enough to create a unique algorithm, but the point is really just to have something "whose reach exceeds my grasp."