It's not actually that complicated. I just finished watching a show on TV, for example. 15 minutes ago I couldn't answer trivia about how it ends or tell you what I thought abut it or how it made me feel. Now I can. It wasn't super deep but it could have made me think about something a different way or like a character I previously didn't. I'm not the same person. After my first post in this thread I now felt a (self-imposed, admittedly) duty to keep up with it more frequently, so my behavior changed before & after posting. I'm now behaving differently that I would have if I just decided "nah, don't hit Post Reply". I'm not the same person.