On Bicycles, and.... what else is there?

Okay, so this is mostly a bike blog, but since I got a new job in October, my time for riding has dropped off substantially. I'm trying to ride into work more often: once to twice per week would be good. But it's 42 miles one-way, so I've got to "make time" for that to happen. Anyway, in my job, one of the products I use is a structure generator for semiconductor device modeling. So, for example, I can build models for field-effect transistors, bipolar junction transistors, p-i-n diodes, photo-detectors, light-emitting diodes, even static random access memory cells and other small circuits. Fun stuff, really. The models do a remarkably good job of matching reality, even though the reality of semiconductors can be fairly complex. Knights of the Lambda Calculus But when I found myself home sick with a bad cold, between naps I needed an activity to keep myself occupied. It was a good exercise to reacquaint myself with Scheme, the scripting language used b...