Philip Plait

Philip Plait

Philip Plait

I am using the word theory as a scientist means it: a set of ideas so well established by observations and physical models that it is essentially indistinguishable from fact. That is different from the colloquial use that means guess. To a scientist, you can bet your life on a theory. Remember, gravity is just a theory too.

Philip Plait

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I am using the word theory as a scientist means it: a set of ideas so well established by observations and physical models that it is essentially indistinguishable from fact. That is different from the colloquial use that means guess. To a scientist, you can bet your life on a theory. Remember, gravity is just a theory too.

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