Final answer:
An argument against a system-based approach emphasizes individual variability in response to systems and the significant effect of social structures on personal circumstances, positing that not all outcomes can be attributed to individual actions alone.
Step-by-step explanation:
An argument against a system-based approach would highlight that social systems, though powerful, do not guarantee the exact same response from all individuals due to the complex interplay of personal agency and structural conditions. Sociologists recognize that while inequalities exist, they cannot be attributed solely to individual choices, as larger social patterns and the structure of society also play a significant role in an individual's social standing. Additionally, social systems are not static; they are constantly influenced and modified by the collective actions and decisions of those within them, as noted by British sociologist Anthony Giddens in his theory of agency and structuration.
Although it is tempting to believe that understanding complex social systems in their entirety through systems modeling could lead to ecological sustainability or social coherence, the inherent complexity suggests that complete understanding may always remain elusive. Moreover, socialists argue that the success of individuals is largely due to societal supports, which implies that systemic factors must be considered in evaluating the fairness of wealth distribution and opportunities for success.