At the most fundamental level, there are two sides of science: theory creation and theory application. The works of Sir Isaac Newton and much of Niels Bohr's early work dealt with theoretical aspects of science. Their research embodies humanity's efforts to understand the laws of nature, which would still exist even without the theorists who study them. Much of the work of Jean-Baptiste-Joseph Delambre, Pierre François André Mechain, and John Harrison consisted of attempts to use key concepts developed by theorists toward practical applications for the benefit of humanity. Their efforts would not be relevant without humanity because they are tailored to the needs of the human race. Scientists who deal with theories will subsequently be defined as theorists, while scientists who deal with the application of theories will be defined as applied scientists. Although the theoretical work of Bohr and Newton changed the way people viewed the laws of nature, it was the work of applied scientists such as Delambre, Mechain, and Harrison that changed people's lives on a global scale. . Due to the more revolutionary nature of applied science, it is imperative that teachers in all school systems recognize and teach the effects of applied scientists when discussing science. Newton shook the scientific foundations of his time with extensive theoretical work. In the field of mathematics, he worked in the field of infinite calculus and independently developed it, the quintessential language of science, economics, and engineering (Gleick 39). In Opticks he discovered many essential properties of light such as the idea that light can act like a particle or that white light is a combination of multip...... middle of paper ...... k theorists, but it is important to note that the reverse is also true. These theories would have little or no impact on human affairs without the work of applied scientists to put them into practical application. Although theories can change the way humanity perceives the world, it is their application that truly revolutionizes human affairs. We find that science is often taught by praising Newton and Bohr for their contributions to science, despite the fact that the works of applied scientists like Delambre, Mechain, Harrison and Thomson have done much more for humanity . If Newton's immortal quote "If I had seen further, it was only by standing on the shoulders of giants" (Gleick 25) were modified for the sake of this article, it would be: if theorists had an impact on humanity, it is only by leaning on the shoulder of applied scientists.