As everybody knows, there is a limited set of joints, and a much larger set of possible movements. More important for our purposes is the fact that there is an unlimited set of mixtures of joints and movement.
original text
As everybody knows, there is a limited set of chemical elements, ninety or a hundred, and a much larger set of chemical compounds. More important for our purposes is the fact that there is an unlimited set of mixtures of elements and compounds.
Gibson, James J. 2015. The Ecological Approach to Visual Perception. New York: Psychology Press.