So, Awoke2flatearth, what you are saying then, is that if I had a telescope or really good pair of binoculars, I could stand on the beach outside San Francisco and see the coast of Japan? 
Where is your proof? With a strong enough lense you can see straight line distance for thousands of miles or more, so why can't we see from one coast to the next with a telescope, since there is nothing in the way?