Urn a Red Ball?: Ellsberg's Ambiguity Effect

Urn a Red Ball?

You are the owner of a snooker club. Unfortunately, as a result of the actions of a colour blind thief, you're in a bit of a pickle. You're about to hold a snooker tournament, and you're short of red balls. Happily, the owner of rival snooker club, Balls "R" Us, has indicated he might be willing to lend you the requisite number of red balls. Unhappily, the owner is evil genius, Professor Zach Coine, and he's making you play a game for them.

Really Deep Thought

I make no secret of changing my mind on one or two important issues....I've never thought it a virtue to adopt a position and try to get famous as a person who defends that position, like a purveyor of a brand name, like you're selling cornflakes.
--Hilary Putnam.