Leonardo hadn’t invented… The soldier’s jumping device? No parachute to be used as a war device or recreation.
Leonardo hadn’t painted using… Realism Sfumato Chiaroscuro We would still have boring, flat Paintings in which the faces look Cartoonish.
Leonardo hadn’t conducted scientific experiments beyond his time? We wouldn’t have some of the basic knowledge that we do about muscles, tendons, organs, bones, and the human body in general.
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