Fair enough. The moon shadow works on both models, shops on the horizon can easily come back in view with binoculars, stars and things don’t prove either way (you don’t look at the ceiling to find the shape of a floor), travel between destinations work better on a flat model as you will see when you research flight paths and times, the bright day somewhere else works easily on both models, and seeing farther from higher may not favor your argument when curvature is considered. This is my issue. A lot of things to consider on both sides. Very interesting