What if we have only one universe and closed timelike curves exist?

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Kim, Minseong
preprint description
David Deutsch provided us one possible solution to the grandfather paradox, Deutsch's closed timelike curves, or simply Deutsch CTC. Deutsch states that this gives us a tool to test many-worlds (Everettian) hypothesis since Deutsch CTC requires Everettian understanding. This paper explores the possibility of co-existence of Deutsch CTC with contextual/epistemic understanding of quantum mechanics. Then this paper presents the irrelevance hypothesis and the hypothetical application to quantum complexity theory.