How can that argument be made for pretty much anything? I thought Sabines point is that the measurements required to confirm the theory aren't possible, so it'

How can that argument be made for pretty much anything? I thought Sabines point is that the measurements required to confirm the theory aren't possible, so it's largely lots of money and time going into pointless speculation right now - even if you find the right solution you have no means to test it. Mathematics you can make your own proofs on paper, physics is not the same.