Quote Originally Posted by Max_Killjoy View Post
I said that you can't have that change, a purely physical/mundane/unextranormal "explanation" for what's going on to allow that drastic difference, and internally coherent and consistent worldbuilding, all at the time. That's the impossible situation.
Again, it depends on what you mean.

On the one hand, yes, you by definition cannot have anything that allows things that are impossible in this world that works solely based on principles from this world.

On the other hand, no, you by definition cannot have a non-physics explanation for anything because physics is just "our model for things" and it must include everything in the world. Or at least it should if you want the model to be any good.