The way CTC computers actually work is because getting the right answer to a hard problem, assuming we can act on the fundamental degrees of freedom of the universe, means that this is the only logically self-consistent solution, and that getting the wrong answer, or not getting an answer at all is logically inconsistent, and thus can’t exist.
The way CTC computers actually work is because getting the right answer to a hard problem, assuming we can act on the fundamental degrees of freedom of the universe, means that this is the only logically self-consistent solution, and that getting the wrong answer, or not getting an answer at all is logically inconsistent, and thus can’t exist.