Basically what I said was, I think wormholes, if they exist(which they almost inevitably do) consist of negative mass. Mainly due to the fact that I think there is a bridge between a black hole to a wormhole. The wormhole HAS to consist of negative mass because of the Casimir Effect. If the end of a black hole is a wormhole, and the end of a wormhole is a black hole then they must be opposites! A black hole consists of positive mass.. And therefore, a wormhole must consist of negative mass.
If, at the end of a sea is a river, and the end of a river is a sea, then they must be opposites. Seas have tuna. Therefore, rivers have spaceships.
I'm not saying it's not true, just that there needs to be more than philosophy backing your arguments
Neither wormholes nor negative mass have been observed in real life. They're far from inevitable.
Wormholes are the opposite of black holes, and therefore must consist of negative mass... To say anything else is ignorance. Ignorance of the fact that there must be something inside the black hole, and that is a wormhole. There is nothing else.
Actually, there are any number of other things that could be inside a black hole. Most likely, hyper-condensed matter/energy and not much else. There are other theories, but without being able to send a probe in that can get back
out, or building an enormously expensive structure to rotate and expose its singularity, there could be a giant floating eyeball with ten thousand spears emerging from its dangling optic nerve, and we'd never know.
For that matter, this stuff is, at the very least, millenia from our reach, simply because using conventional propulsion we'd have to bring the materials to construct a wormhole to a blackhole - getting even a small craft, hell, a mote of dust to any blackhole, even under unreasonable time-frames (you'd have to make adjustments en-route) is beyond our capabilities at the moment. Either that, or we'd have to find two free-ranging wormhole mouths and somehow attract one of them to a useful position. Then, by exploiting relativity, you could
possibly travel back a certain amount of time, but not before one or both mouths of the wormhole were found and accelerated away from each other. As in, no travelling back to 21st century Earth, ever.
Not only that, but without a Roman Ring (two or more wormholes), you're likely going to be traversing a significant distance in space
as well as time, meaning the difference will at best require a very large, very fast trip through normal space to gain any time at all. It would be useful for communications, but that's about it. (Good luck finding two wormhole mouths in the vastness of space that are close enough together to even consider making the first part of a roman ring, let alone being lucky enough to have the other ends be close enough together to finish it.)