I'd trust gwern's speculation.
The content here varies from philosophy to poetry to programming to prosaic FAQ. It is everything I felt worth writing for the past few years that didn’t fit somewhere like Wikipedia or was already written - "…I realised that I wanted to read about them what I myself knew. More than this - what only I knew. Deprived of this possibility, I decided to write about them. Hence this book."2 I never expected to write so much, but I discovered that once I had a hammer, nails were everywhere, and that supply creates its own demand3. I believe that someone who has been well-educated will think of something worth writing at least once a week; to a surprising extent, this has been true. (I have added ~130 documents to this repository over the past 3 years.)