How rational bidding leads to irrational losses
The Rules: Auction a $1 bill. Highest bidder wins it. But here's the twist: the second-highest bidder ALSO pays their bid and gets nothing!
The Escalation:
Losing $0.90 feels much worse than "only" losing $0.05. We bid to avoid the bigger loss.
"I've already invested this much—I can't stop now!" Past bids shouldn't affect future decisions, but they do.
Winning becomes about beating the opponent, not about the dollar. Pride overrides profit.
Each small step seems reasonable. The trap is invisible until you're deep in it.
Economist Martin Shubik invented this game in 1971 at Yale. In classroom demonstrations, students have bid up to $204 for a $1 bill!
The dollar auction models real-world escalation: arms races, bidding wars for companies, "just one more" in gambling, and even relationship conflicts where both parties keep investing despite mounting costs.
The only winning move? Don't play. Or if you must, collude with your opponent to split the gains—but that requires trust in a competitive game.