An interesting point is that the meter is off by 0.2%. Not bad you might think, but compare it to the Summerian Kù of 51.85cm of the copper of Nippur and its de

An interesting point is that the meter is off by 0.2%. Not bad you might think, but compare it to the Summerian Kù of 51.85cm of the copper of Nippur and its derived unit SAR of 3600 Kù being 1866.6 meter being only 0.77% off from an arc second of the meridian. Those ancient scientist did know the square root of 2 and PI by 4 sexagesimal figures. Thats better then IEEE floating point single precision! They did calculate the size of the earth being only 0.77% off the real value. All this wisdom was lost 333BC, when Alexander destroyed civilization, installed femicide and women segreation, that is still cursing middle eat. Later the Greeks claimed parts of recovered ancient math as their own. So we now know the names of Greek copycats like Pythagoras, but not the names of those who really discovered this wisdom. It had been most likely a female name, because reading, writing, math had been typical women skills at that time.