Amos Hawley was influenced by Roderick D. McKenzie, who was mentored by Robert E. Park and E.W. Burgess of the
Chicago School of Sociology. Roderick McKenzie published several works on a number of topics ranging from immigration (
Oriental Exclusion, 1927), economics ( ''L'evolution economique due monde
, 1928), and to urbanism ( The Metropolitan Community'', 1933). McKenzie influenced Hawley through his idea that it is necessary to understand change through space and time among populations or an aggregate. Hawley learned from Mckenzie that humans are observable units within an ecosystem with a given technology they will interact with their environment and develop predictable patterns. Hawley found that change is irreversible because a series of events within a state of time cannot go backward in time. Evolution, as viewed by those in the scientific community was an outcome of cumulative change along with expansion of population. To understand if a given population will expand or evolve, Hawley questioned whether "complexity and scale were concurrent." He concluded that "when complexity and scale advance more or less together, the effect is growth or expansion rather than evolution". By understanding the concepts behind population expansion and evolution, Hawley explored how all organisms are connected to the environment and through behavior. Amos Hawley believed that organisms are connected in a web of relationships that interdependent and are enmeshed with the environment. In the web of relationships organisms can have relationships of symbiosis or commensalism.
Symboisis is the close bond relationship between the two individuals of two different species.
Commensalism is when organisms make similar demands on the environment often resulting in competition. Hawley believed humanity was dominant in the ecosystem due to advances in technology and humanity's control over the habitat. He contended that through culture humanity is able to modify its subsistence to match its needs and desires. Hawley writes "thus the development of human dominance through the agency of culture involves a reconstruction of the biotic community. Instead of accommodating his activities, as do primitive peoples, to the natural life association, civilized man regulates the biotic community in accordance with his needs". ==References==