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No, you haven't seen it with your own eyes. There's no need for argument from authority. There are several well reasoned arguments that the Earth is spherical
by _rpd 8y ago
No, you haven't seen it with your own eyes. There's no need for argument from authority. There are several well reasoned arguments that the Earth is spherical (e.g., the shadow of the Earth is curved). It's proper to recite them.
- Nadya 8y ago>There are several well reasoned arguments that the Earth is spherical (e.g., the shadow of the Earth is curved). That argument would prove the Earth is round - but not necessarily that it is spherical. A flat, round disc would also produce a curved shadow. To play devil's advocate - you would also need to prove that it is Earth's shadow on the moon and not the Sun's shadow. For an example, I made an HD image in paint [0]. [0] https://vgy.me/8xRkJv.png https://vgy.me/8xRkJv.png
- _rpd 8y ago> To play devil's advocate - you would also need to prove that it is Earth's shadow on the moon and not the Sun's shadow. For an example, I made an HD image in paint [0]. Very nice! A great demonstration of how difficult it is to be explicit about all our assumptions.