A paradigm shift may take a long time to be fully completed.

Question

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Scientific practice is naturally conservative. Scientists learn their profession in the context of an accepted scientific paradigm that is typically well established. They are therefore reluctant to make a radical shift in their views. And often the data needed to complete a paradigm shift may take a long period of time to gather and be fully assimilated in the scientific community.

A Paradigm Shift May Take a Long Time to Be