Structural Functionalism or simply functionalism, is “a framework for building theory that sees society as a complex system whose parts work together to promote solidarity and stability”.
Structural Functionalism
Structural functionalism, or simply functionalism, is “a framework for building theory that sees society as a complex system whose parts work together to promote solidarity and stability”.

This approach looks at society through a macro-level orientation, which is a broad focus on the social structures that shape society as a whole, and believes that society has evolved like organisms. This approach looks at both social structure and social functions.
Functionalism addresses society as a whole in terms of the function of its constituent elements; namely norms, customs, traditions, and institutions. A common analogy called the organic or biological analogy, popularized by Herbert Spencer, presents these parts of society as human body “organs” that work toward the proper functioning of the “body” as a whole.
In the most basic terms, it simply emphasizes “the effort to impute, as rigorously as possible, to each feature, custom, or practice, its effect on the functioning of a supposedly stable, cohesive system”. For Talcott Parsons, “structural-functionalism” came to describe a particular stage in the methodological development of social science, rather than a specific school of thought.

Although the actions of humans without doubt do not always engender positive results for the individual, a biological functionalist would argue that the intention was still self-preservation, albeit unsuccessful.
An example of this is the belief in luck as an entity; while a disproportionately strong belief in good luck may lead to undesirable results, such as a huge loss in money from gambling, biological functionalism maintains that the newly created ability of the gambler to condemn luck will allow them to be free of individual blame, thus serving a practical and individual purpose.

In this sense, biological functionalism maintains that while bad results often occur in life, which do not serve any pragmatic concerns, an entrenched cognitive psychological motivation was attempting to create a positive result, in spite of its eventual failure.
Structural Functionalism in details :
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