"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. Many other great military powers had their comprehensive design scientist-artist inventors; Michelangelo was one of them. Many persons wonder why we do not have such men today. It is a mistake to think we cannot. 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."