An Old Soul
Hi, Anodyne i think your last comment almost cracked it.
What if it is both round and flat? Reality is a matter of perception.
We, and the universe itself is made of energy, we all know this. Perceiving this world on a reality outside of the 3rd dimension could well reveal its existence as being a flat plain of energy. But as we are trapped in this 3D physical reality, how else could we perceive the earth than in the same way we perceive all the other plains of energy we see in the sky, as 3D spherical planets.
Food for thought