Industrial revolutions greatly accelerated technical and scientific progress, but every science develops from its past. Thus, the particular stage (of development) that one generation achieves becomes the starting point for the next.
The protagonists are engineers, businessmen, and dreamers, who are men of their own time, who are influenced by the social and intellectual structure in which they grew up and worked. Furthermore, innovators are not all the same in terms of skills, talents and inspiration. Each of them must learn about the developmental level, where their phase of science was situated, at the time they set out on their path. Some of them merely learn and disseminate; but, there are others with exceptional drive who can control innovation’s direction, answering positively to the challenges they inherit from their predecessors. When combined, people, and the environment where they work, are factors that can either favor stability or encourage change.