Opposition by experts to the United States Patent Office, because supposedly everything useful has been invented.
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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.
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*Leading scientists recommending around 1900 that the United States Patent Office should be abolished because everything useful had been invented.{{fact}}
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*Opposition by experts to the United States Patent Office, because supposedly everything useful has been invented.<ref>This opposition can be found in many forms, from weakening the strength of patents by small inventors today to repetition of a quote attributed to Charles Duell, Commissioner of the Patent Office, in 1899: "everything that can be invented has been invented." While this quote may be apocryphal, "this saying has been so often quoted that it has been gradually accepted as a truth, and thus being still repeatedly quoted again and again even by prominent scholars." http://www.intertic.org/Policy%20Papers/Pretnar.pdf Bojan Pretnar, "Two Sources of Persistent Patent Controversy," p.4]</ref>
*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.