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As time progresses and technology advances, if humanity survives the climate crisis then people will use more and more energy, as a whole. So, in addition to harnessing energy from wind and water, this will mainly be done by converting sunlight into electricity. Therefore, when humanity becomes a type one civilization in the 22nd century, the energy consumption of people worldwide will be at about 4×10¹² watts. A lot more will change.
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In the year 3000 11 billion people will all have access to basic utilities like electricity and the internet, because everyone will live in super-consolidated megacities. Plus, everything that can be automated will be automated in the smart cities of the future. As part of this, with enough vertical farms, humanity will be able to feed everyone on Earth and the other planets with a super-charged scientifically engineered vegan diet. So, in the 30th century, meat substitutes will taste even better than the real thing and be far more nutritious, as a whole.
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he smart hospitals of the 30th century, every nurse and doctor will be assisted by powerful diagnostic algorithms and finely-tuned surgical robots. So, AI will become very prominent in the healthcare industry. Even the smart clothes of the future will have microsensors to monitor vital signs and be able to alert the paramedics in the event of an emergency, one of which will be human and the other an android. There will be an increase in both the average height and longevity of most people in general.
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From now until the year 3000, the several thousand languages that are currently spoken will be reduced down to less than a hundred, as ethnicities are drastically diminished around the world. As such, English, Mandarin, Spanish, and a few other languages will be vying for the top spot as the universal language of our species. In the end, cultural memes will all eventually just blend together in the great melting pot that is the world of consolidated cosmopolitan megacities.
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The countries of the world gradually come together more and more, the metric system will become the universal standard of measurement across the solar system. This will all be done in conjunction with mass disarmament and substantial divestment from military budgets to enable more socialized investments to occur. Ultimately, this will all help to pave the way for peace through unrestricted intercontinental and interplanetary trade and travel, across and between the worlds of tomorrow.
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