[api]

Since you can see the curvature of the earth you can also prove it’s round. Big bonus.

[Workaccount2]

Everyone knows they have specially shaped cockpit glass that warps your FOV to give the appearance of a round earth.

/s

[m_eiman]

Well, you only see that it's bent - you don't go all the way around. Might as well be an upside down wok pan.

[HeyLaughingBoy]

Nope. It's the shell of the turtle.

[meepmorp]

It's 4 elephants on a turtle swimming through space.

[jaclaz]

Would that be the half-flat theory? ;)

https://www.smbc-comics.com/comic/flat