Robotics and Space Energy
1900 AD — New York
Partial
One day, humanity will harness the energy of the cosmos itself, with robots performing all work instead of humans, and wars fought by machines.
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Reality: Robotics is advancing exponentially, drones are used in warfare, and solar energy is the fastest-growing energy source.
Smartphone and Internet
1926 AD — New York
Fulfilled
When wireless technology is perfectly applied, the whole Earth will become a huge brain. We shall be able to communicate instantly, regardless of distance. A man will be able to carry a device in his pocket.
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Reality: Tesla described something remarkably similar to the smartphone and internet nearly 80 years before their invention.