Common sense is just a bundle of prejudices you acquired before you were 18. - Richard Feynman

The Earth's circumference was first calculated in 240 BC by Eratosthenes using the angle of the Sun during the solstice in 2 cities 500 miles apart (the measurement took 1 year: he walked from Aswan to Alexandria to take the measurement there at the following solstice). He theorized that the Earth was a sphere, and his calculation was within 5% of modern measurements.

my co-pilot sleeping all 7 hours home, he earned it though

sunset over Illinois

folks outside of the USA tend to think America is NYC and LA, but its more than that: Bird Island, MN