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While searching online for an answer to my question, I came upon the this pseudo-scientific research. They did not test the old wood-and-metal sleds, so this may not be good science. Never-the-les...
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While searching online for an answer to my question, I came upon the this pseudo-scientific research. They did not test the old wood-and-metal sleds, so this may not be good science. Never-the-les...