Just a thought experiment, let’s say the earth is flat, looks like many professionals would know, including
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Pilots/ATC/sea captain
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Land surveyor and civil engineers
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Astronomers and Geologists, at least the one dealing with experimental data
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Militaries, at least radar operator and artillery
Just these categories are already a lot of persons, I assume I miss a lot of others. So how many person does it make in total ? 10 % of the population ?
Obviously only the programmer/team of programmers who wrote and maintains the simulation.
The Earth is flat but they just make it look round with a shader.
It’s still flat because the entity observing the simulation is looking at an image on a monitor.