At least for myself, it wouldn’t have been obvious in advance that there would be exactly two factors, as opposed to (say) one, three or four.
It’s unclear to me we’ve really investigated deeply enough to say that. We just know these factors matter, but it still seems quite possible that lots of other factors matter or that those other factors cause these two.
Fair. In that case this seems like a necessary prerequisite result for doing that deeper investigation, though, so valuable in that respect.
At least for myself, it wouldn’t have been obvious in advance that there would be exactly two factors, as opposed to (say) one, three or four.
It’s unclear to me we’ve really investigated deeply enough to say that. We just know these factors matter, but it still seems quite possible that lots of other factors matter or that those other factors cause these two.
Fair. In that case this seems like a necessary prerequisite result for doing that deeper investigation, though, so valuable in that respect.