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*Lord Kelvin claiming heavier than air flight, radio, and radioactivity were impossible.<ref>http://zimmer.csufresno.edu/~fringwal/stoopid.lis</ref>

*Lord Kelvin claiming heavier than air flight, radio, and radioactivity were impossible.<ref>http://zimmer.csufresno.edu/~fringwal/stoopid.lis</ref>

*Albert Einstein thought nuclear power would never be commercially viable.

*Albert Einstein thought nuclear power would never be commercially viable.

*Leading scientists recommending around 1900 that the United States Patent Office should be abolished because everything useful had been invented.

*Leading scientists recommending around 1900 that the United States Patent Office should be abolished because everything useful had been invented.{{fact}}

*Thomas Watson, chairman of IBM in the 1960s, believed there would never be a market for more than a handful of computers in the entire world.

*Thomas Watson, chairman of IBM in the 1960s, believed there would never be a market for more than a handful of computers in the entire world.

*Irving Fisher, professor of economics at Yale, believed in 1929 that stock prices would never decrease.

*Irving Fisher, professor of economics at Yale, believed in 1929 that stock prices would never decrease.