Posts 8 and 9 were really beneficial to me. The illusion of transparency is something that has caused me great distress in the past, and it was really nice to have an explanation for why that was. I always valued my intelligence, and I used to think that when people didn't agree with things that seemed obvious to me it was a sign that they were stupid. I had come across this idea as "people have different experiences", and when I saw things through that lens it helped me to be kinder and less arrogant. These posts really crystallized that idea and made me go "oh, that's why that is".