How to Debunk Flat Earth Without Relying on NASA or Photos

[Agent K]

"If the earth is flat, how come you have to look down to see mountains that are above you?"
Experienced flat earther's try to blame it on perspective of course

Can they draw a diagram of how that works?

 

[Jesse3959]

Can they draw a diagram of how that works?

Oh, if they are geometrically challenged badly enough they will try, but by looking at the diagram you'd think they are stoked on mushrooms.

 

[AmberRobot]

Can they draw a diagram of how that works?

They may show a diagram. But not one of how that works because it doesn't work.