(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.
Confidence votes 4.3K. 1964 was the last year the US minted dimes and quarters from silver for regular circulation. The US Mint makes proof sets every year that have silver coins in them, which you can buy from the US Mint or a local coin dealer. Also, look out for silver halves, which were last made in 1964 as well at 90% silver.