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The branch of physics that deals with objects that aren't guaranteed to move when force is applied, but merely exist in a state of potential motion until observed. It's the science of why your dropped toast always lands butter-side down, why the bus you're waiting for has a 90% chance of arriving only after you light a cigarette, and why the line you choose at the grocery store will, with statistical certainty, be the slowest. It's less about Newton's laws and more about Murphy's Law, quantified.
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