I made a video some time ago I think for a comment on Steemit? Maybe it was part of a post, I can't remember.
This is just a re-post of that video now more people might be around to enjoy it. The point of the video is that the argument of seeing the curvature of Earth from a plane is simply a bad argument if you were to try and convince a flat-earther.
The Earth is way bigger than your head can really comprehend. Here I demonstrate through experimentation with Google Earth something you can apply to any ball-like object that really puts this into perspective, and how despite that, the earth is still round.
This is a great way to show how both sides of the argument are kind of wrong, with an almost tactile approach to reality we can all appreciate. Enjoy!