Ascientific theory can be incorrect but still be considered a good scientific theory. how can this be?

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 Good scientific theories are sometimes incorrect, but they can still be accepted as true good scientific theory makes a testable prediction of what will happen, even if it is eventually proven wrong. Only correct scientific theories are considered to be good. Scientific theories are accepted truth and no longer subject to testing for verification

If they were tested and experimented on it means it could be good.