But NOT a flat Earth, right?

A flat earth would hold no more (necessary) sway on the motion of the sky than any other shape.

So, do we BOTH disagree with the flat earth theory?

Sort of. In my view, there is no flat earth theory - just like there is no round earth theory and for the same reasons. Scientific theories have no purpose in determining the shapes of physical objects.

In my view, the earth is whatever shape it is :) Determining what that shape is with certainty does not involve astronomy. In fact, there is only one way to certainly determine the shape of any physical object - rigorous and repeated measurement of it! (NOT of things that are NOT it, and/or are in the opposite direction of it - like the sky)

But NOT a flat Earth, right?

A flat earth would hold no more (necessary) sway on the motion of the sky than any other shape.

So, do we BOTH disagree with the flat earth theory?

Sort of. In my view, there is no flat earth theory - just like there is no round earth theory and for the same reasons. Scientific theories have no purpose in determining the shapes of physical objects.

In my view, the earth is whatever shape it is :) Determining what that shape is with certainty does not involve astronomy. In fact, there is only one way to determine the shape of any physical object - rigorous and repeated measurement of it! (NOT of things that are NOT it, and/or are in the opposite direction of it - like the sky)