I actually think that 5c is the most humanly comprehensible of the three proofs, and would have thought it least likely to be computer generated, were it not for the "and we are done" tell at the end. Of course, you could be messing with us, using "and we are done" as a distractor - let's not pretend that past behavior puts you above such a tactic ;-).
Share this poll, because the more votes the better.
Opinions! We all have them. Find out what people really think with polls and surveys from Crowdsignal.