Even today, many disagree with Eratosthenes of Cyrene, who measured Earth's circumference within 2% accuracy back over 2200 years ago. Einstein is also credite

Even today, many disagree with Eratosthenes of Cyrene, who measured Earth's circumference within 2% accuracy back over 2200 years ago. Einstein is also credited with saying that "Two things are infinite: The universe and human stupidity; and I'm not sure about the universe."