This 'telephone' has too many shortcomings to be seriously considered as a practical form of communication. The device is inherently of no value to us. What use could this company make of an electrical toy? - Western Union (1878)
Radio has no future. - Lord Kelvin, British mathematician and physicist (~1897)
Space travel is utter bilge. - Dr. Richard van der Reit Wooley, Astronomer Royal, space advisor to the British government, 1956. (Sputnik orbited the earth the following year.)
... via https://github.com/globalcitizen/taoup