And in that case, maybe our understanding that there are laws of physics and that they don't change is false.

Claiming that our understanding of science 500 years ago is at all equitable to the way science works in 2016 is even more naive.

That's the opposite of what I'm claiming so maybe you should work on your reading rather than science. Our understanding changed over 500 years. And in another 500 years some moron will be saying the same thing you are, that we've always had perfect and final knowledge of science, and it will be just as stupid then.