I love reading stuff like this, but I also hate reading stuff like this. On the one hand, it confirms once more how wonderful & useful Common Lisp is; on the other, it depresses me how much our industry as a whole refuses to use such a valuable tool.
Sometimes I need to remember that the top of the mountain is narrower than its base.
At the same time, less people adventure themselves near the top. Most of them go to the beach. It's fun there too but not the same thing.