*actually* that's a modern myth, that people believed in a flat
   earth. That's a modern fiction.

   *Truth* is, people always knew the earth was round, with the
   exception of a couple of mythologies here and there. The concept
   that ppl once believed the earth was flat was made up in the
   19th century (or perhaps they believed it to be true) by
   promoters of Science... which was in a bit more of a primitive
   state than it is today... subject to the same PT Barnum style
   tactics as it seemed *everybody* was using from the 1840s-1890s.