Did you watch that group from South America that did real experiments? They had a top surveying firm use precision GPS equipment (accurate to within centimeters) to measure whether buildings about 1800 miles away from each other actually lean away from each other as they should on a globe. Buildings were at the same elevation and similar heights. They used directional radio waves that are not subject to refraction that could not work through earth curvature. They also built their own specialized laser. They also used precision GPS and geodetic surveying equipment to prove that a large body of water was in fact flat. They had engineers and professional cartographers accompany some of these experiments, men who were skeptical of flat earth at the outset but then had to concede based on the experiments. They also measured sun paths and sun angles by setting up cameras around the world, and they found that these were not consistent with a spherical earth.
They did the "electromagnetic waves across a lake" experiments, which are bunk due to refraction mostly.
GPS relies on a satellite network, but you probably knew that. The GPS antenna on helicopters and airplanes is mounted on top, because the satellites are above them. Let that sink in when you talk about GPS-based measurements. No, it's not terrestrial masts. No, these satellites cannot magically hover over a flat plane on defined positions, kept up by balloons or something. Tell that to any expert in the field and he'll laugh at your face.
If you actually measure Sun angles they're totally inconsistent with a flat plane and consistent with a spherical Earth, there are tons of experiments and videos about that.
You keep posting these absurd pictures of one or two things that appear to be cut off, but it's been proven by Flat Earthers that this CAN be due to atmospheric conditions as well as the limits of whatever optics are being used. Flat Earthers take measurements, explain which optics are being used, etc. But the Globe Earthers simply dismiss them as refraction. But then you post random pictures and pretend that refraction doesn't exist. It only exists for you when pictures indicate flat earth. Black Swan has never been debunked, simply because you CAN take a picture of the platform under certain atmospheric conditions where it does appear to be cut off. Black Swan picture not only showed both platforms but you can also clearly see the horizon line behind the second platform.
Flat Earthers have demonstrated that sometimes you can see the whole thing and sometimes you can't ... from the same location on a different day. There are only two possibilities: there's atmospheric conditions and refraction on the "globe earth" days or else it happens on the "flat earth" days. Globe Earthers simply assume, but never prove, that the refraction only magically happens when there's a picture that proves flat earth, but couldn't possibly be there on the "globe earth" days. It's completely dishonest, and you discredit yourselves this way. Meanwhile, the FEs try to be honest, taking all the measurements, etc. There's no intellectual honesty among the globe earthers, just a bunch of lies and fake videos from the space agencies.
Blackswan is bullcrap:

Not only does the first image demonstrate variability of refraction which allows to see farther depending on temperature and atmospheric conditions, but if you think that perspective causes straight lines to bend down, you've a profound issue with understanding how perspective works.
If think you actually try to bend reality to conform to your mind.
You're talking about Sun paths, geodetic measurements and GPS satellites, yet can't even explain simple sunsets in your worldview.
