but I wasn’t aware that people’s posts had to be testable predictions to deserve upvotes
No, it’s severally sufficient, not necessary—testable predictions deserve upvotes.
gwern said above that (s)he’d “be happy to record” my prediction. I had no idea my predictions were being recorded at all.
Predictions about MoR are commonly recorded on PredictionBook, which sadly does not offer prizes but can tell you how good your past predictions were so you can get better.
No, it’s severally sufficient, not necessary—testable predictions deserve upvotes.
Predictions about MoR are commonly recorded on PredictionBook, which sadly does not offer prizes but can tell you how good your past predictions were so you can get better.