This fallacy is the illusion of the absolute. By fostering the illusion of the absolute, language can lead humans to inhumanity. Born to specific people in a specific time and place, we are thrust from the womb into a specific pattern of choices, a specific range of possibilites. Social contracts are valid only when continually, individually reaffirmed. No contract binds absolutely.
Humans differ radically from their environment.
Purpose is a fundamental characteristic of humans, but to attribute it to the environment is always erroneous. Freedom is necessary, but it is not sufficient. Our subjective apprehension of reality makes it impossible for any system not based upon individual moral authority to function non-destructively.