The Future of the Impossible: the Physics and Ethics of Time Travel by Dannelle Shugart examines time travel, in dimensions of travel (physics), time, and ethics. In chapter 1, we are given a good insight into the physics of it, special and general theories of relativity, black holes, worm holes, and other esoteric objects of science, paving the way. Next comes, what can be called a better depiction of reality, by quantum physics. Like how, many versions of the same time traveler can exist, with no catastrophic violation of the laws of physics. The discussion now moves to other boundaries, where we meet questions that test the ethics of time travel. Like, is it ethical to traverse a black hole into another universe?
The book then concludes with a firm reply that most forms of time travel are no more detrimental than other methods of travel.
This is an enjoyable read, it poured light on many paradoxes of philosophy and physics.
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