(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.
State Quarters were authorized under the 50 States Commemorative Coin Program Act (Public Law 105-124) signed into law on December 1, 1997 by President Clinton. The Act provided for the redesign and issuance of a circulating commemorative quarter dollar coin for each of the 50 States beginning in 1999.