The reason I asked is that as I stated before, I don't think learning has taken place unless it is retained. I taught school for 30 years, and a student could reiterate what I had said that afternoon, but if you asked them a week later, or a year later, it might not be there at all. So psychologically there is an entire part of educational psychology put into practice by reteaching concepts at certain intervals, so that it is retained.
Here on this forum, I've occasionally expounded on things about my faith either because I was asked to, or because I felt it worthwhile to clear up the misconceptions. Then the other person would indicate they understood, but then 2 weeks later they would just reiterate the same misconception that had me explaining in the first place, proving they didn't learn it at all. So I discontinued saying much about my faith at all, and became more of a watcher. If you have no actual audience, what's the point?
If I was going about learning here using the same methodology you're using, I know I wouldn't retain anything, due to information overload. I wouldn't remember who said what, so the exercise would be useless ... for me. That's not to say that you're not retaining anything, as we all learn differently.