I’m writing a book about epistemology. It’s about The Problem of the Criterion, why it’s important, and what it has to tell us about how we approach knowing the truth.
I’ve also written a lot about AI safety. Some of the more interesting stuff can be found at the site of my currently-dormant AI safety org, PAISRI.
For what it’s worth, as I model the path, I’d guess that this was stream entry. That is, you had insight into the non-separateness of self for the first time. It’s expected that it doesn’t stick, as only rarely does that happen (very, very few people seem to experience sudden, persistent awakening), but it gave you a taste of it, and with dedicated practice it can become persistent, but it general requires having a string of insights over months and years that resolve various confusions that stand in the way of persistence.