Occasionally I will gain a passing interest in a topic and try to learn as much as I can about it before I inevitably burn out. It might be a good idea to keep some notes on these bits of knowledge so that if they ever become useful to me (or anyone else), the work in researching them will already have been done. I give no guarantees on the quality of any of these notes; they will probably be mostly my internal ramblings, but every so often, maybe I will write something useful.