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If I interpret the "del" as change in any arbitrary thing, the answer is false in a quantum mechanics playground, which our reality is fundamnetaly built on, because quantum mechanics will always have energy, even if something is in its ground state, technically not moving. This is because the uncertainty priciple says del momentum can never really be 0, otherwise we could measure the velocity and position of individual particles and violate all the laws we've measured to be true. However, on a relativistic standpoint, fuck you.