Genius

Sometimes I wonder, how genius a person could be? This picture I took onboard Costa Fortuna on my way from Rhodes to Dubrovnik on the wall of thr self-service restaurant. I wonder how, Colombus and friends, been able to draw this map of the world without any help from satelite image. And until now I still can't understand how people could build the giant pyramid without any help of cement or any bulldozers. It proofed one thing, the genuis of human being is beyond the wildest imagination one could has.