I really enjoyed this sound clip from Globebusters but added different video that I hope you'll enjoy. Jeranism made a salient point, why would railroad tracks also converge at the horizon if the horizon is unrelated to perspective? Clearly, perspective is the cause of the horizon. However, this is a conundrum for the globe believer because if the horizon is a product of perspective, then where's the curvature? Officially, the curvature must begin at 2.7 miles for a 5-foot observer, so where does perspective end and the curvature begin? Where are all of the "science" discussions of this question? Why does "science" avoid such a fundamental question and pretend as though the horizon is attributable only to the curvature? Wide Awake - https://www.youtube.com/channel/UCkxN0iPWExvmFGvbT-zvL6Q/videos?disable_polymer=1 My 6.23-mile mirror experiment - https://youtu.be/HpyaMoBzFy4 Globebusters - https://youtu.be/FWl0QhiCj1w