Samuel Arbesman explains ‘The Half-life of Facts’

Much of what we believe to be factual has an expiration date.

In primary school you learned that there were nine planets in the solar system. There weren’t any that were  known to exist outside of it. Since then, astronomers have spotted over 800 planets around other stars (and thousands more “candidates”) and demoted Pluto to a mere “dwarf planet”. Even a cursory glance at other fields reveals similar patterns.

 

 

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