"Leonardo da Vinci is the outstanding example of the comprehensively anticipatory design scientist. Operating under the patronage of the Duke of Milan he designed the fortified defences and weaponry as well as the tools of peaceful production.. What happened at the time of Leonardo and Galileo was that mathematics was so unproved by the advent of the zero that not only was much more scientific shipbuilding made possible but also much more reliable navigation. Immediately thereafter truly large-scale venturing on the world’s oceans commenced, and the strong sword-leader patrons as designing their new and more powerful world-girdling ships. Next they took their Leonardos to sea with them as their seagoing Merlins to invent ever more powerful tools and strategies on a world-around basis to implement their great campaigns to best all the other great pirates, thereby enabling them to become masters of the world and of all its people and wealth.. The topmost Great Pirates’ Leonardos discovered — both in their careful, long-distance planning and in their anticipatory inventing that the grand strategies of sea power made it experimentally clear that a plurality of ships could usually outmaneuver one ship. So the Great Pirates’ Leonardos invented navies. Then, of course, they had to control various resource-supplying mines, forests, and lands with which and upon which to build the ships and establish the industries essential to building, supplying, and maintaining their navy’s ships... The required and scientifically designed secrecy of the sea operations thus pulled a curtain that hid the Leonardos from public view, popular ken, and recorded history. p. 25"
January 1, 1970
https://en.wikiquote.org/wiki/Navy