The notebooks of Leonardo da Vinci are stuffed with ideas for helicopters, submarines, and airplanes, but few of those reached even the mannequin stage as a end result of sources of one type or another had been missing. The resource of capital entails the existence of surplus productiveness and a corporation able to directing the out there wealth into channels by which the inventor can use it. The resource of materials entails the supply of applicable metallurgical, ceramic, plastic, or textile substances that may perform no matter functions a new invention requires of them. The useful resource of skilled personnel…