nice writeup. might be a bit careful though, as far as i know port scanning might be technically not allowed by your campus's it policy... nonetheless great job!
2:50m/km. most people couldn't sustain that pace for even 2 minutes. id go as far as saying most people couldn't close their eyes and imagine consistently how fast that is.
Did you read the link? A NO bet on Joe Dart is a YES bet on Cory Wong + Others.
It is trivial. Saying NO to a candidate means you're saying YES to ALL other candidates with varying probabilities that would sum to the neg risk of that NO bet.