Flat horizon is same thing.

Yes, I expect, and I know, as one goes up, above a sphere, optically, the horizon will descent in your field of view, and you will see it curve. Given the circumference of earth the curve would should be noticeable at sea level, and very obvious from a typical airliner

Why do you think it's logical to say that even though it's looks flat, aka straight line, that it's actually round and curving. You are telling people not to believe their own eyes.

The don't see a curve and you are saying it's there. But it's clearly not.

As elevation increases, based on your Google search of the curvature of earth, at what altitude might you expect to notice the curve with your naked eye?

Because, as far a civilians have taken a camera is looks flat. Flat and straight for Infinity.

The only other images, the only visible proof the earth is a globe, always comes from government. Institutions funded by government.

Is there any other proof, other than that, the earth is a sphere?

Flat horizon is same thing.

Yes, as you go above a sphere, optically, the horizon will descent in your field of view, and you will see it curve.

Why do you think it's logical to say that even though it's looks flat, aka straight line, that it's actually round and curving. You are telling people not to believe their own eyes.

The don't see a curve and you are saying it's there. But it's clearly not.

As elevation increases, based on your Google search of the curvature of earth, at what altitude might you expect to notice the curve with your naked eye?

Because, as far a civilians have taken a camera is looks flat. Flat and straight for Infinity.

The only other images, the only visible proof the earth is a globe, always comes from government. Institutions funded by government.

Is there any other proof, other than that, the earth is a sphere?

Flat horizon is same thing.

Yes, as you go above a sphere, optically, the horizon will descent in your field of view, and you will see it curve.

Why do you think it's logical to say that even though it's looks flat, that it's actually round. You are telling people not to believe their own eyes.