From the book's Introduction: Promethean science is a catchall term for the pseudo-science of Victorian literature, and modern day science fiction, that focused on the quest for the secret of creating life. The rules presented here are intentionally simple; the purpose of this sourcebook is not to create an entirely new system of science as magic, or even to create an entirely new skill for use in your campaigns. Instead the Prometheus science system provides you with an alternative means of creating flesh golems, one that hews closer to the archetypal images of literature and film.