Part 10/15:
Flat Earth arguments also focus on visual compression, where objects in the distance appear smaller and higher in the field of view. They claim this "compression" causes bottom-up disappearances.
Perspective and Line of Sight
The key point is that visual compression is just a perspective effect: objects naturally shrink with distance, but their top portions remain visible until the object reaches the horizon's edge, where Earth's curvature causes the tangent point.