This question is about experiments involving entangled electrons or any other fermion for that matter. I’ll get to that in a sec. I’ve been interested in understanding interpretations that have retrocausality. (TIQM by Cramer, Wheeler–Feynman absorber, time symmetric by Price) It’s easy to imagine 2 entangled photons getting measured with the 2 measurement events occurring completely outside of each other’s light cones. And in that case, you can’t say which event occurred first. You can always find some inertial frame of reference where the events happen in the opposite order. This avoids issues of causality. That’s one less issue for understanding interpretations that contain retrocausality. I can explain if my logic isn’t clear there. Anyway, that logic doesn’t work as well for fermions since it’s likely the measurement events occur in the same order for every inertial frame of reference. That means there’s no getting around the retrocausality of it. And that causes all kinds of issues like causality and tachyon forces. I think that was an issue way back when Wheeler and Feynman came up with their absorber theory. Since interpretations with retrocausality are still viable to this day, I figure they must have a solution to this. I can’t quite figure out enough of these interpretations to understand what that solution could be. Any ideas?