(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.
In circulation, the coin's date wore away quickly, and Mint engravers modified the design to address the issue in 1925. The Standing Liberty quarter was discontinued in 1931, a year in which no quarters were struck. By Congressional act the Washington quarter, featuring the first president's profile was introduced in 1932 to celebrate the bicentennial of his birth.