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| 0c6eca0 | The theory of universal gravitation is not cast-iron. No theory is, and there is always room for improvement. Isn't that so? Science is constructed out of approximations that gradually approach the truth. . . Well, that means all theories are subject to constant testing and modification, doesn't it? And if it eventually turns out that they're not quite close enough to the truth, they need to be replaced by something that's closer. Right? | scientific-method scientific-paradigm | Isaac Asimov |