Gah, wait. I feel dumb. Why would TDT find correlated equilibria? I think I had the “correlated equilibrium” concept confused. A correlated equilibrium would require a public random source, which two TDTers won’t have.
Ignoring the whole pi-is-not-known-to-be-normal thing, how do you determine which digit of pi to use when you can’t actually communicate and you have no idea how many digits of pi the other player may already know?
Gah, wait. I feel dumb. Why would TDT find correlated equilibria? I think I had the “correlated equilibrium” concept confused. A correlated equilibrium would require a public random source, which two TDTers won’t have.
Digits of pi are kind of like a public random source.
Ignoring the whole pi-is-not-known-to-be-normal thing, how do you determine which digit of pi to use when you can’t actually communicate and you have no idea how many digits of pi the other player may already know?
Same way you meet up in New York with someone you’ve never talked to: something like Schelling points. I’m not sure that answer works in practice.