After browsing through the site I have noticed that photographs and videos are not accepted as reliable evidence because easily editable.
Considering this, if there was to be reliable and acceptable evidence of the earth not being flat, what form would that evidence need to have?
Of course if someone would be sent themselves in a spaceship to see the Earth from afar with their own eyes, I suspect they would accept whatever shape it appears to have as its true shape. Or would they?
Would a round earther seeing a flat earth find some kind of explanation describing how something is making him see the earth flat even though it's round?
And conversely would a flat earther seeing a round earth find some kind of explanation describing how something is making him see the earth round even though it's flat?
Would they propose that the windows are not really windows? Let's assume they would have been given time to inspect the spaceship in detail before boarding it.
And of course it won't be possible to send every human in a spaceship for them to see the Earth from afar with their own eyes. And since images and videos are not considered reliable evidence, what form would the evidence need to have to convince everyone without a doubt of the true shape of our world?
Whatever evidence exists for any claimed shape of Earth, it is obviously not convincing everyone, because some people are supporting different versions of its shape (e.g. flat or spherical).
But certainly if you put a cube and perfect ball side by side, everyone would be able to tell the cube is a cube and the ball is a ball, there would be no debate about it. Can the same level of observational evidence that makes us all capable of distinguishing a cube from a ball be conceived to determine the shape of the Earth? What form would you expect that evidence to have?
I am not asking for a specific evidence supporting any one shape of the Earth. I am asking what form you think the evidence should have to convince everyone 100% and easily that the shape of the Earth is any one given shape.