Should Flat-Earthers be debated or ignored?

[LastPoet]

What do you make of this?

An image of the earth that I neither took nor saw taken, but accept on authority. Illustrated by the fact that most of us assume such images are taken with a single shot, when they're actually composite images stitched together.

You are an idiot. If you ever taken flight, you would already have seen the curvature of the earth.

Also, a greek who I don't remember did more than 2000 years ago, measured the radius of the earth with a decent accuracy using nothing but hourglasses and two wells.

You must be equivocating your position. You are not a student of psychology, you sure are a study subject for psychology.