Fun fact: this pdf was paywalled, but thanks to some generous members of my Twitter, it was able to be freed. I look forward to a day when all such work is available to anyone who wants it.

Normally I’d have something else to add, but I feel down lately, and it’s nice to see that I’m able to help with one or two things that matter.

I was mostly surprised that the paywall model still persisted in 2021.