I’m not sure if this is what you were thinking of (seeing as how it’s about a year old now), but “blog post summarizing the most useful bits of LW’s lore” makes me think of Yvain’s Five Years and One Week of Less Wrong.
I’m not sure if this is what you were thinking of (seeing as how it’s about a year old now), but “blog post summarizing the most useful bits of LW’s lore” makes me think of Yvain’s Five Years and One Week of Less Wrong.