Who Were the Sea Peoples?

Now I can see the light of day  The Verrazano Bridge so far away In the yard the machines play And I think I’m falling down Looking over that old canal Looking for just one true pal Ain’t nothing to see unusual Nine stories up but I’m gonna drown

Sometimes libertarians, such as Walter Block, suggest that if something isn't explicitly forbidden in a law (or contract), it is permitted. Why this can't work: