That’s pretty bad. On top of being unfair, it was a total missed opportunity to talk about the law of large numbers (I wonder if they could get a decent sample

That’s pretty bad. On top of being unfair, it was a total missed opportunity to talk about the law of large numbers (I wonder if they could get a decent sample by combining everybody’s measurements) or skew (maybe everybody is a couple milliseconds too low just based on reaction time). Or there could be some air resistance if you used, like, ping-pong balls.