[krastanov]

This sounds quite unreasonably defeatist. That argument (can not be solved without an experiment) can be made for pretty much anything, but it has a few counterexamples in physics, and many more in math and theoretical computer science.

[tidenly]

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.

[eru]

A solution might have predictions for other areas of physics. Predictions for other areas of physics that we _can_ test.