Flat Earthers love to scream "perspective" and show distant cityscapes or ships with their bottoms cut off - and somehow miss the irony that they're demonstrating Earth's curvature! Let's see how these two would look side by side, globe vs. flat, at distance - including zoomed in with a P1000. Perspective shrinks things. Only curvature hides the bottoms.

Flat earthers: your local Sun fails the daylight test, again. The Sun keeps exposing the problems with flat Earth. You don’t need special equipment to check its rising, setting, and movement across the sky. You need your eyes - and a model that explains what they see. This video compares the same daylight pattern at the same moment on two representations of Earth: an azimuthal equidistant map, adopted by flat earthers with a local Sun circling above it, and a globe illuminated by a distant Sun. Watch what happens as the seasons change. In December, daylight surrounds the entire Antarctic rim on the map, while a large interior region remains dark. That’s the Antarctic 24-hour Sun, witnessed firsthand during The Final Experiment. On the globe, that pattern follows naturally from Earth’s shape and tilt. Now add their proposed local Sun. How does a spotlight circling above the tropics illuminate the entire outer rim, including the opposite side, while leaving the interior dark? Making the spotlight bigger doesn’t solve that problem. Calling it a glowing ball or a “luminary” doesn’t supply an explanation either. Your model must reproduce where people actually see the Sun, when it rises and sets, and how those observations change with the seasons. I expect the usual memes, accusations, and recycled claims by Flerfs in the replies. Watch how many avoid the actual question: How does your local Sun produce this daylight pattern? It doesn’t. It can’t. Just watching the Sun debunks flat Earth.

But here’s the thing. We DO know what gravity is. It’s a property of spacetime, described by general relativity, with extraordinarily precise experimental confirmation. You’re asking whether we understand its ultimate, deepest, most fundamental nature. Well, by that standard, we don’t know what ANYTHING is. Not energy, not matter, not spacetime, not even the fundamental fields of physics. You can always ask one more “but why?” until you reach the limits of current knowledge. That doesn’t invalidate everything we learned on the way down. If knowing what something is requires knowing why reality itself exists and operates as it does, then physics apparently knows nothing. 😁

Flat earthers love to keep yelling "perspective!" at everything. Converging sunbeams? Perspective! Ships over the horizon? Perspective! Fine. Let's actually use it. Watch these shadows. Parallel from above. Converging from down low. Same shadows, same sun. If converging lines meant a nearby light source, the shadow lines here would put the sun parked a few feet past the road. But follow the actual light rays over the tops of the posts and they meet the sun high up in the sky. And from above, the shadows are parallel. That tells you the sun is so far away its light rays arrive essentially parallel. Explained properly, perspective only ever validates the globe. Flerfs, the word you endlessly regurgitate is just another nail in your coffin.