(though I don’t see how you identify any distinction between “properties of the agent” and “decisions . . . predicted to be made by the agent” or why you care about it).
I’ll go further and say this distinction doesn’t matter unless you assume that Newcomb’s problem is a time paradox or some other kind of backwards causation.
Quoting myself:
I’ll go further and say this distinction doesn’t matter unless you assume that Newcomb’s problem is a time paradox or some other kind of backwards causation.
This is all tangential, though, I think.