(1) an approach to understanding the nature of complex things by reducing them to the interactions of their parts. (M’Pherson 1974)
(2) a view that a complex system is nothing but the sum of its parts, and that it can be fully understood by examination of those parts. (M’Pherson 1974)
(1) and (2) M’Pherson, P, K. 1974. "A perspective on systems science and systems philosophy." Futures 6(3) (June 1974):219-239.