Who Were the Sea Peoples?

I'm not necessarily against it, but the logic of it is essentially the following: 1) John Marshall: The Supreme Court is the ultimate arbiter of the U.S. Constitution. 2) Critic: Who says? 3) JM: The Constitution itself. 4) Critic: Hey, Article III, the one setting up the Court, certainly does not say that in so many words. On what authority are we to read the Constitution that way? 5) JM: Please pay closer attention to step 1. It is very similar to the way the Pope became infallible.