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Knitters use the term Sweater Curse to describe a situation in which a knitter gives a hand-knit sweater to a significant other, who quickly breaks up with the knitter. Despite its name, the Sweater Curse is treated in knitting literature not as a superstition governed by paranormal forces, but rather as a real-world pitfall of knitting that has real-world explanations and solutions. Several plausible mechanisms for the sweater curse have been proposed, but it has not been studied systematically.