"<a href=""https://www.youtube.com/watch?v=FJSI7QTAt_o&amp;t=54m00s"">54:00</a> One game theory nitpick", there was absolutely no reason for anyone to go for -$100, the group would get more if two people went for $0,(reply>), If two had chosen $0 then the $1000 in the last round would've been $500 instead and they collectively would've lost $400