For some reason nobody points out that what the humans are doing is absolutely 100% the correct thing to do! Our theoretical Homo Economicus who accepts 1 cent is clearly beaten by real life Becky who refuses to settle for less than 50⁄50, and so gets $50 every time!
I am still not convinced that staying intentionally out of a perfect-subgame equilibrium should be a good choice. What do you mean with “every time”? The standard version of the Ultimatum Game assumes to be played once, and that you will never encounter the same opponent again. There is no concept of “this player is well-known for rejecting anything less than 50/50″.
Suppose to play the Ultimatum Game not in person, but via Twitter accounts with silly nicknames. Every account randomly change name after each game, so you cannot distinguish one player from another. And all players play from their room with absolutely no one else wandering around. You are not going to be judged greedy or dumb or whatever by anyone. Do you still reject 1 cent in this scenario?
If you lived in a world where people accepted that, you would be offered 1 cent every time. The point of acausal Trade and timeless decision theory is that other agents will act differently depending on how you would act in a counterfactual.
I am still not convinced that staying intentionally out of a perfect-subgame equilibrium should be a good choice. What do you mean with “every time”? The standard version of the Ultimatum Game assumes to be played once, and that you will never encounter the same opponent again. There is no concept of “this player is well-known for rejecting anything less than 50/50″.
Suppose to play the Ultimatum Game not in person, but via Twitter accounts with silly nicknames. Every account randomly change name after each game, so you cannot distinguish one player from another. And all players play from their room with absolutely no one else wandering around. You are not going to be judged greedy or dumb or whatever by anyone. Do you still reject 1 cent in this scenario?
This is acausal tragedy of the commons. Should you overfish? Should you punish those that do at a cost to yourself?
If you lived in a world where people accepted that, you would be offered 1 cent every time. The point of acausal Trade and timeless decision theory is that other agents will act differently depending on how you would act in a counterfactual.