Another type of dumb argument.....make a dumb argument and then claim that if one doesnt believe that aruguemnt then there is nothing else that can be done.......

Im sure there are MUCH better ways to show evidence of the world being round other than "All these other things we see in the sky are round, so this must be as well"

If the Earth is flat it doesnt mean other objects in the sky we choose to call planets must be round.