Bill Pragnell wrote:
> Leaving aside popular notions of 'hyperdrive', which usually seems to involve
> travel in some other domain with higher speed limits... I thought spacetime
> wormholes were permitted by general relativity (provided you can find some
> exotic matter)? Or is that an outdated idea these days?

  A "wormhole" requires that space is already shaped in a certain way
that allows a "shortcut" to be created. What if space is *not* shaped
that way? How do you create the wormhole?

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