(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.
Coins minted in 1965, 1966, and 1967 did not bear any mint marks. This was the U.S. Mintâs effort to reduce the coin collecting activity that was to blame for a coin shortage at the time. It is common knowledge that the U.S. Mint last placed an S mint mark on circulating coins back in 1981.