>>11385504Go measure the distance to the horizon.
It's easy, just find an landmark that is on or partially below the horizon and use a map to work out how far away it is.
The figure you will get (on flat ground at sea level) is about 4.5 km, with the distance increasing the higher up you are.
Now, if we take this into account, several questions with your "eye resolution" theory arise.
1: why is it that your maximum eye resolution allows you to see only 4.5km away at sea level, but let's you see significantly further if you climb a tree?
2: if people's maximum eye resolution prevents them from seeing further than the horizon, how are they able to see objects in space such as the sun, the moon, the planets, the stars and satellites/meteors?
3: what alternative explanation does your theory provide for the fact that the distance you measured to the horizon matches up perfectly in all cases with the distance to the horizon you would get if you calculated it for a globe the size of the earth?
Please answer these questions if you want to be taken seriously
