Plutarch recorded some even more remarkable ancient findings. He guides Aristarchus as determining the moon to be between 0.31 and 0.40 the size of the Earth. He cites an unidentified philosopher who measured the moons distance to be,in modern units, about 215,000 miles (the true value averages 240,000). All this was done with nothing but the naked eye, probably some crude sighting tools, and an excellent knowledge of geometry by people who had outgrown tales about faces and reboots.