Go Fuck yourself handshake.

Actually, I’m not a handshake... I just got locked out of my main account because I stupidly forgot the password :(

At 55k ft you absolutely can

Nope! Even at 150k it isn’t visible to the human eye unaided. Though you are not the first, nor the last - to believe you could. In fact, you may actually have (however what you saw was an illusion due to distortion)!

Back away from the porn and take a class.

Good advice for us all! I’m way ahead of you brother, or sister!

Maybe learn something

Indeed! We must never cease! So much of what we learn (in classes, and outside of them) is simply wrong. In life, we are students and then we die. You seem to feel you are done learning in regards to the horizon (what it is, wether it appears to curve or not and why/what that signifies) - but you have just begun!

Perhaps a brief, civil, conversation with someone of a differing viewpoint could help you to practice what you preach? Or at least share your learning with another wayward soul?