Maybe he doesn't know Leonardo Da Vinci's accomplishments!
Leonardo Da Vinci's Accomplishments
Leonardo is revered[2] for his technological ingenuity. He conceptualised a helicopter, a tank, concentrated solar power, a calculator,[5] the double hull and outlined a rudimentary theory of plate tectonics. Relatively few of his designs were constructed or were even feasible during his lifetime,[nb 3] but some of his smaller inventions, such as an automated bobbin winder and a machine for testing the tensile strength of wire, entered the world of manufacturing unheralded.[nb 4] As a scientist, he greatly advanced the state of knowledge in the fields of anatomy, civil engineering, optics, and hydrodynamics.[6]
Leonardo da Vinci wiki
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