Right, I should have qualified the black hole mass. But it doesn’t affect the point, which is that just because equations tell us that some favorable path throu

Right, I should have qualified the black hole mass. But it doesn’t affect the point, which is that just because equations tell us that some favorable path through spacetime is physically possible, doesn’t mean we could survive the trip. As for Alcubierre drives, they’re interesting as a problem in highly speculative physics. But when people start taking as if we might actually build one, they lose me. I guess perhaps it’s kind of a fantasy game, like talking about gods, but if you’re not a believer or interested in playing the game, it just seems pointless. They’re not real and they’re extremely unlikely to ever be real.