The OP basically asked "if you pick one direction and fly in that direction without changing course, where do you end up when you get to the edge of your flat earth and continue to fly in the same direction?" Its a simple question which you flat earthers have not anwered, but have instead gone way off topic discussing what is a straight line and talking about altitudes and all kinds of other shit that does not matter, just to avoid answering the question. Forget about straight lines and etc, focus one SAME DIRECTION. Fly straight south, nonstop, continue flying in that direction until you see the edge of your world then continue flying towards it and over all the ice and everything....just keep going. So where would you end up in your flat earth model? Where? Its a simpe thing to do because many people have done it and continue to do it in our global world everyday. So why can't a single flat earher answer that question? Why? Can flat earhers not get on a plane? Can flat earthers not get their own plane and do this themselves? What is stopping you? Global NASA conspiracy at the edge of the earth preventing you from flying there? Did any of you get your own plane and try to do this to see if anyone will stop you? Have you taken any pictures of armies or military bases patrolling the thousands of miles of borders at edge of world? Lol.
Please answer where you will end up if you travel in one DIRECTION only. Don't give me some BS about "oh you will have to turn around when you get to the edge just because we said so", but actually explain with proof or physics or mathematics or science or photos why you have to turn around when you get to the edge. Why? Do you hit a glass wall or dome? Show it to me. Do you fly into space? Prove it to me. Do you fall off a huge waterfall? Take a picture and stream it live while doing that.
Stop trying to change the topic and asnwer the OPs original question. I know you guys perfectly understand the question, but since you can't answer, you go off on tangents about conspiracy theories. Lets forget that. Lets pretend that NASA gave you guys a free pass to do what you want and go where you want (since you believe NASA is guarding the edges of earth), and now you don't have to turn around at the edge of the earth but keep flying in that same direction, what happens? If not one flat earther can answer this most basic question that even a preschooler can answer, what basis do you have for any other flat earth theory?
Again, DO NOT give us a "because it is so" answer. Show real proof with photos, scientific trials and experiments, mathematical equations, published articles that have been peer reviewed and tested by other scientist, or anything in that manner. Us "globeheads" can explain all that in details with tons of proof on our end. We are just waiting for your proof now. So tell us...PLEASE.