Alcubierre's drive is a solution to Einstein's field equations which simply means the math checks out in theory for warp drive.

The resulting practical problem is that the energy requirements necessary for the solution are far greater than what we can feasibly achieve now or in the future (exotic matter's existence notwithstanding).

But the fact that a physicist was able to derive this metric (energy requirements aside) is significant. Given the history of science, I would not discount the possibility that someone else will come along in the future with another solution which lowers the energy requirements to something feasible. But we can't predict this.

But isn't it amazing that the math checks out at all? I find it inspiring...