We look at the human body as a biochemical machine controlled by genes and therefore we see a mechanical aspect to life and then try to understand the nature of mechanics by looking at how the physical parts interact with each other. If you want to understand life you just look at it as a whole series of interactive chemical reactions. What we are leaving out is the invisible elements, the contributions of the invisible world, which are emphasized in the nature of quantum mechanics. Matter is energy and is a primary factor that must be considered because everything is ultimately energy.