Hypotheticals are not required to follow the laws of reality, and Newcomb is, in the original problem, definitionally prescient—he knows what is going to happen. You can invent whatever reason you would like for this, but causality flows, not from your current state of being, but from your current state of being to your future decision to Newcomb’s decision right now. Because Newcomb’s decision on what to put in the boxes is predicated, not on your current state of being, but on your future decision.
Hypotheticals are not required to follow the laws of reality, and Newcomb is, in the original problem, definitionally prescient—he knows what is going to happen. You can invent whatever reason you would like for this, but causality flows, not from your current state of being, but from your current state of being to your future decision to Newcomb’s decision right now. Because Newcomb’s decision on what to put in the boxes is predicated, not on your current state of being, but on your future decision.