(plural paradigm shifts) 1  A radical change in thinking from an accepted point of view to a new one, necessitated when new scientific discoveries produce anomalies in the current paradigm. ( US) A radical change in thinking from an accepted point of view to a new belief.
The use of IN GOD WE TRUST has not been uninterrupted. The motto disappeared from the five-cent coin in 1883, and did not reappear until production of the Jefferson nickel began in 1938. Since 1938, all United States coins bear the inscription.
There were no dollar coins produced in the United States after the last Peace dollar was produced in 1935 until the Eisenhower dollar began production in 1971. Silver was no longer used for coins in general circulation after 1964 - copper-nickel clad coinage began in 1965.