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For both climate change and evolution, skeptics sometimes sow doubt by saying that it is just a “theory.” The word “theory” has nothing to do with the validity of a scientific principle or lack thereof. (Adobe Images)

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Scientific theories aren’t mere conjecture – to survive they must work

In contrast to general parlance where a theory “is a proposed explanation whose status is still conjectural,” a scientific theory is only conjectural until it is tested experimentally.