As a matter of fact we are like bacteria living upon a ping pong blue ball spinning in one direction, these retarded people never considered the possibility the earth was never like those BBC documentaries about dinosaur times, they never think the earth could've spinned in other direction, tne amount of 02 being different, density and even gravity or shape and size of the earth, hence different days and years... if the earth is hit by a huge asteroid as se know it happened many times in the past it could've altered even the direction of the rotation stupid posters ...