“When wireless is perfectly applied the whole earth will be converted into a huge brain…. We shall be able to communicate with one another instantly, irrespective of distance. Not only this, but through television and telephony we shall see and hear one another as perfectly as though we were face to face, despite intervening distances of thousands of miles; and the instruments through which we shall be able to do this will be amazingly simple compared with our present telephone. A man will be able to carry one in his vest pocket.”
Nikola Tesla, inventor, futurist and engineer, c. 1926.
It always amazes me the foresight of Nikola Tesla.