If we find something, that's success, a reason to build another, larger collider. If we do not find something, we just didn't build big enough. The real chall

If we find something, that's success, a reason to build another, larger collider. If we do not find something, we just didn't build big enough. The real challenge is to come up with a pro-collider argument that terminates. When do we stop? Do we make one which girdles the world? Do we disassemble the planets and encircle the Solar System for the one after that? Why not the Milky Way? The Local Group?