was Thomas Kuhn's the Structure of Scientific Revolutions. His main argument in the book was that science does not progress in a continuous fashion, but rather in paradigm shifts. In fact, the phrase "paradigm shift" comes from this book.
A paradigm shift only happens when the guardians of the old paradigm die off and the younger generation takes over. Usually, there isn't much switching of belief from the old paradigm to the new paradigm by the old paradigm defenders.
Wikipedia has a nice summary of the book, so you don't have to read it :):
“The welfare of the people in particular has always been the alibi of tyrants.” — Albert Camus
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