This post has some lovely things to say about the relation between cause and effect, derived from considerations of the frame of reference of a physical theory. For a natural scientist from a past civilization to have the concept of conservation of momentum is astounding. But his conception of weight is interesting. We now differentiate between mass and weight. He didn’t. If you hold gravity constant, there is no difference. His theory was completely consistent within its conventional frame of reference. Science strives to expand that frame of reference, leaving old truths new in a new way, with more context.
With P-world theory, my goal is to provide a little more context. A framework within what we know has its place, but it is a larger place, admitting of more kinds of truth.