the key points of the functionalist perspective may be summarized by a comparison drawn from biology. if biologist wanted to know how a human body works, they might begin with examine various body parts such as brain, lungs, heart, liver etc. however if they simply analyzed the parts in isolation from each other they would unable to explain how life was maintained. to do this, they would have to examine the parts in relation to each other, since they work together to maintain an organism .
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