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MarkusRamikin comments on Game Theory As A Dark Art - Less Wrong
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How on Earth?
Read as:
Right, of course. Selection effect.
I think what confused me was that I took that to mean the total amount of money earned, not per-person.
If I'm reading the link (thanks VincentYu!) correctly, your first impression was right. In the graduate class, total amounts earned were [1.95, 1.90, 2.15, 2.50] in that order for consecutive auctions. In the undergraduate class, [2.30, 2.05, 4.25, 3.50].
The number of people playing (bidding) did decrease (graduate: [5, 3, 4, 2], undergraduate: [6, 4, 3, 2]) in each round, but a selection effect is insufficient to explain the increase in total earnings, since there's no reason these "selected" people could not have bid equally as much in the first round.
ETA: Note that this is a two-highest-bidders-pay auction, not all-pay, so the increase in total earnings does reflect an average increase in individual bids as well.
Unfortunately, the link seems broken. I would really like to see this study.
Great examples of game theory.
Considerung the evil plutocrat:
What happens if both parties vote "nearly" 50% yes? The bill would fail, and the money depends on rounding issues. In addition, the best solution for both would be a cooperation here. Reject the bill, share the money in some way.
If a party reasons that the other party votes 100% yes, the best option would be just some "yes", and several "no" votes. The bill passes, but the party gets a better reputation. Therefore, we have no stable equilibrium.
Edit: Why does the site steal single line breaks?
The site uses Markdown for formatting - to add a line break to the end of a line, add two spaces at the end. Note the "Show help" button for more info.
Google HTML version.
I can't answer why, but you can prevent that by putting two extra spaces at the end of the line before a single line break (more details).
Indeed, the problem seems to assume that political parties are not the sorts of things that can learn to cooperate with each other against a common foe.