What If The Earth Were Flat?

Today, it’s nearly impossible to believe the Earth is anything but round. But for most of our history, humans have thought Earth was flat. The one concept our ancient ancestors were missing was gravity. Gravity’s effects are the key to determining whether the Earth is actually flat, or not. On a sphere, gravity pulls in the same direction everywhere on the surface. But on a disc, gravity changes direction as you move toward the edge. At the center, you feel a downward pull just like on spherical Earth. But as you move out, gravity starts pulling sideways as well as a downwards. This would wreak havoc on sports played in different parts of the world. A ball thrown straight up in the air mid-way out, would curve down and backward toward the disc’s center. Plus, a ball thrown mid-way out wouldn’t go nearly as high or far as a ball thrown up at the edge where gravity’s downward pull is practically zero. But sports are just the beginning. Since plant stems gro