Who’s on first?
“There are basically two kinds of people in this world. Those who accomplish something and those that claim to. The first group is less crowded.”—Mark Twain Eratosthenes, an ancient Greek mathematician, calculated the earth's circumference in approximately 200 BCE using knowledge of the time, 2 sticks, and his brain. He was right with less than a 2% error. Approximately 400 years later, Ptolemy calculated the circumference of the earth to be smaller than it actually is by 28%, and his estimate was used throughout the Renaissance, including by Columbus. Eventually, (Read more...)