GMAT Critical Reasoning (CR) | Re: Some scientists, who today are recognized for their brilliance, were

option D
Not all scientists who were once considered insane are still considered insane today.

NEGATION IS
ALL scientists who were once considered insane are still considered insane today.

so insanity didn't change with time
CONCLUSION FALLS apart
what is considered insane or not insane has changed over time.

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