Structure

Just a picture of two vertical structures carrying some weight.  All weight-bearing structures from post and beam, pyramid, arch, dome, are primarily vertical.   A flat-Earther asserted, "When hovering in a helicopter how come the Earth doesn't rotate underneath?  The Earth, therefore, must be flat!"  (Inertia)  I think all flat-Earthers should be offered a special discount on the purchase of SC4 if they can write a page making sense of the flat Earth theory .  I just pushed the limit to the flat area* SC4 can process, and discovered we just need faster space processing to curve the plane into a ball.  *184,117,761 square km