>>/46382/
Apparently there's a test for this. https://faculty.washington.edu/chudler/java/hands1.html
I personally took 13.981s on the up/down one, and 13.537s on the left/right test, a 0.444s difference. This is the second fastest tier, being filled by 5% of submissions.
So again I pose the question: Am I some kind of supergenius, or is the majority of the population just fucking retarded?