No i am thinking of a warp drive. The Alcubierre drive or space time metric in particular. It the sort of metrics that lead to closed timelike space curvature or whatever (its been a while), ie time travel. In all these cases various things are not conserved that are wildly held to be conserved, requires negative energy etc.
Ah, sure, lots of things are called "warp drives" I guess. Yeah, that sort of drive seems wildly impractical for all sorts or reasons.
What I'm talking about is somewhat different: it's an asymmetric warping of spacetime in just the same (smooth and continuous) way that all mass distorts spacetime symmetrically, such that you "fall" in some chose direction. It doesn't require the same exotic material as a wormhole, but I think it requires soemthing equally exotic (it's been a while, but I vaguely remember there are 2 different kinds of negative mass).
Sure math can be predictive. But that leads you in the direction of a experiment, it is the experiment that matters.
No argument there. But if someone were really demonstrating a drive with unexpected properties, not just stage magic, that's an experiment worth repeating.
In otherwords we design the math to fit the universe we live in.
We do, but then we see what else that math predicts. Most of the really crazy-non-intuitive stuff in QM has come from very unexpected consequences of the math that later proved out in experiment.
Heck, the whole crazy idea that the universe once had an additional field that certain particles couple with, preventing change in spin polarity without energy input, but then that field "condensed:, and now those same particles can spontaneously change spin - that's all just seeing where the math led. Until the Higgs Boson was found, a big chunk of electroweak theory hadn't been directly confirmed by experiment.