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>I wonder what the most amazing secret was that was held for the longest time?

I heard that the use of the golden ratio in projects such as the engineering of cathedrals, required that the first thing you do before you draw your plan is to draw a pentagram, in order to derive the ratio using simple drawing tools, and then carefully erase it, or in other words, make it occult. http://www.matematicasvisuales.com/english/html/geometry/gol...

Also, I'd really like to know who in the hell built the Ankythera device. https://en.wikipedia.org/wiki/Antikythera_mechanism




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