Are wormholes like black holes?
In a way, except jumping into a black hole is a one-way journey to nowhere. A wormhole would have an exit as well as an entrance. Astronomers are convinced black holes are real, but wormholes remain firmly in the realm of speculation. How would you actually make a wormhole time machine? In the book I outline a possible way to do it, starting out with the high-energy collision of two uranium nuclei, followed by explosive magnetic pinching, and then a neat trick with negative energy beams involving lasers and rotating mirrors. Are you disturbed by the paradoxes that arise if time travel is allowed? What if you went back to 1940 and killed your mother before you were born? I suppose I am intrigued rather than disturbed. Obviously nobody can change the past, but that doesn’t mean you can’t affect it. The difficulty arises with free will. You couldn’t just go back and rearrange things at whim. But you could do something that is consistent with the present. Doesn’t this make nonsense of a lo
