I studied category theory at university and have no clue what he is talking about. It seems nonsensical and not well written. Edit: I realise this might be an

I studied category theory at university and have no clue what he is talking about. It seems nonsensical and not well written. Edit: I realise this might be an unfair criticism since this is the author's private blog, and may expect readers to be very familiar with the topics he talks about. Hackernews is not likely not his intended audience, and the unrelated title of "Category Theory" does not help either.