As always.. I'm super curious about the answer to the question that ultimately doesn't matter much in the conversion-context.. Why?

Given your history w/ testing like this, I'm curious if you see value in asking 'why', and whether or not there are useful ways to get an answer. It seems like in addition to satisfying my curiosity about human psychology, it would be helpful in informing next-tests to make the entire process more efficient... but I don't see much talk about the 'why' when it comes to these tests.