PEOPLE USE TO THINK THAT THE WORLD WAS ROUND. HOWEVER, PEOPLE ALSO THOUGHT THAT THE EARTH HAD FOUR (4) CORNERS AND IF YOU TRAVEL TO THE ENDS OF THE EARTH, YOU WOULD FALL OFF BUT, THESE WORLDVIEWS WERE TRUE, BUT WERE NOT CONCLUSIVE. THEY WERE ONLY THEORIES WHICH BEST FIT WHAT THE PEOPLE UNDERSTOOD IN THEIR GIVEN TIME PERIODS. (JRSL-UCYG)