When a ceedeetee agent met a 9-bot, she would reason causally: “Well, the other agent is going to name 9, so I had better name 1 if I want any payoff at all!”
How does a ceedeetee agent tell what kind of opponent they’re facing, and what prevents ceedeetee agents from evolving to or deciding to hide such externally visible differences?
Depending on such details, there are situations where TDT/UDT/FDT seemingly does worse than CDT. See this example (a variant of 2TDT-1CDT) from cousin_it:
Imagine two parallel universes, both containing large populations of TDT agents. In both universes, a child is born, looking exactly like everyone else. The child in universe A is a TDT agent named Alice. The child in universe B is named Bob and has a random mutation that makes him use CDT. Both children go on to play many blind PDs with their neighbors. It looks like Bob’s life will be much happier than Alice’s, right?
How does a ceedeetee agent tell what kind of opponent they’re facing, and what prevents ceedeetee agents from evolving to or deciding to hide such externally visible differences?
Depending on such details, there are situations where TDT/UDT/FDT seemingly does worse than CDT. See this example (a variant of 2TDT-1CDT) from cousin_it:
More tangentially, the demand game is also one that UDT 1.x loses to a human, because of “unintentional simulation”.