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: Common in science fiction, these involve time travel scenarios where an action in the past might negate its own cause in the future, such as the "Grandfather Paradox" or the "Predestination Paradox".
: These reflect real-world contradictions, such as the "Paradox of Choice"—the idea that having too many options can actually lead to less satisfaction and more anxiety. The "Writer's Paradox" Strong Ground and the Tenacity of Paradox - Brené Brown Paradox
: These arise from within a system of reasoning. A classic example is the Liar's Paradox : "This statement is false." If it is true, it must be false; if it is false, it must be true. Such puzzles have historically forced mathematicians and logicians to re-examine the basic axioms of their fields. : Common in science fiction, these involve time