*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.