In Science, "fact" Can Only Mean "confirmed To Such A Degree That It Would Be Perverse To Withhold Provisional Assent.

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In science, "fact" can only mean "confirmed to such a degree that
it would be perverse to withhold provisional assent." I suppose that
apples might start to rise tomorrow, but the possibility does not
merit equal time in physics classrooms.
-- Stephen Jay Gould

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