If they can visit us from out of space, that means more than likely, they're probably type three. In other words, a civilization may be a hundred thousand years more advanced in us. And then the question is, would they even want to visit us? Well, if we do meet aliens from outof spades that have mastered the plunk energy, they are so far advanced that e like squirrels to them. But you're right, when we meet the aliens in out of space,. if they're that advanced, then they would have already been able to master much of the laws of physics of to day.