Functional explanation risks implying all societal behaviors are adaptive. [definitional]
Hardin 1980) should perhaps say "functional explanation" rather than "functionalist explanation," because the latter suggests the blind assumption that whatever is good for a society must have happened and whatever behaviors a society develops must be good for it.
DEFINE: Clarifies the terminological distinction between 'functional' and 'functionalist' explanation in social theory.
Russell Hardin, Trust and Trustworthiness, loc. 996