Originally Posted by Janszoon

Sure you can. People have observed ships disappearing over the horizon for centuries. The horizon line we see is created by the fact that the surface of the Earth is curving away from the observer.

Originally Posted by J.R.R. Tolkien

There is only one bright spot and that is the growing habit of disgruntled men of dynamiting factories and power-stations; I hope that, encouraged now as ‘patriotism’, may remain a habit! But it won’t do any good, if it is not universal.