I tried to suggest in a recent post that perhaps we can think of an example of something which logic precludes, and physics does not, and I gave the example of a time-travel based paradox called the Grandfather Paradox. Perhaps, though, one could say that it isn’t really physically possible because the appropriate procedural project of physics will eliminate the Grandfather Paradox from the range of physically possible consequent circumstances. Take by analogy something quantum Physicists do all the time – say you have a particle which, as far as you know, will travel in any direction, and you have no way of knowing or predicting, prima facie, which direction it will in fact go. What you can do in such a case is you begin by assuming, methodologically, that it will go in every direction at once, and then you find that some of these directions cancel each other out, and thus you can narrow down the range, post-selection, as they say. Well, if you can think of the Grandfather Paradox as an example of the same kind of ‘cancelling-out’ scenario, then you could say that the appropriate procedural methodology of physics precludes the Grandfather Paradox. Physics, properly construed, has no room for such a paradox.
This is plausible, I think.