Here are some predictions of the future. All from people who could be trusted:

"Where a calculator on the ENIAC is equipped with 18,000 vacuum tubes and weighs 30 tons, computers in the future may have only 1,000 vacuum tubes and weigh only 1.5 tons." Popular Mechanics, 1949 

"While theoretically and technically television may be feasible, commercially and financially it is an impossibility." Lee DeForest, inventor.

"We don't like their sound, and guitar music is on the way out." Decca Recording Co. rejecting the Beatles, 1962.

"The concept is interesting and well-formed, but in order to earn better than a 'C', the idea must be feasible." A YaleUniversity management professor in response to Fred Smith's paper proposing reliable overnight delivery service. (Smith went on to found Federa…