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Comment Re:useless (Score 4, Interesting) 192

Here you go (ChatGPT-4):

> Can you prove the world is flat?

As an AI language model, I provide information based on facts, scientific consensus, and established knowledge. The overwhelming scientific consensus is that the Earth is not flat but an oblate spheroid – a sphere slightly flattened at the poles and bulging at the equator due to its rotation.

There are numerous ways we can verify that the Earth is not flat, and here are a few of them:

Satellite images and photographs: Photos of Earth taken from space by satellites, astronauts, and space probes clearly show a round Earth. These images are consistent and provide strong evidence that the Earth is a sphere.

Gravity: Earth's gravity pulls objects toward its center. If the Earth were flat, the force of gravity would be different at the edges compared to the center, which is not observed.

Earth's shadow on the Moon: During lunar eclipses, Earth casts a shadow on the Moon. This shadow is always circular, which is consistent with a spherical Earth.

Airplane flights and ship routes: The paths of airplanes and ships take into account the curvature of the Earth. Non-stop flights between distant locations and ship routes would not be possible if the Earth were flat.

Horizon: As you gain altitude or move closer to the shore, more of the Earth's surface comes into view. This is consistent with the Earth being a curved surface. Additionally, objects like ships disappear over the horizon from the bottom up, which is also consistent with a curved Earth.

These examples, along with many others, provide strong evidence that the Earth is not flat. The idea of a flat Earth is a misconception that has been debunked by centuries of scientific research and observation.

Comment Re:Potatoes? (Score 1) 108

Mistake in your math - you've assumed transport costs are the same between Earth -> Mars, and Mars -> Earth; going Mars->Earth is significantly cheaper due to the lower gravity.

If your transport vessel that's going interplanetary doesn't land on earth - then the delta V required to go back to Mars to complete a round trip is fairly low; and you can knock a few orders of magnitude off the costs. The big cost in rocketry is escaping Earth's gravity well.

That isn't to say I disagree - I think mining is unlikely to be of any value.

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