Natural and Social Selection

The approach consists of developing alternatives rather than a unique flowsheet. The selected solution is the best cost-effective means only for the assumed constraints of technological, ecological, economical and social nature. 

NOTE —Each prompt and 1-2-3 map came from a unit entitled Nature s Fury. Besides being an interesting writing subject, these examples were selected because the theme of nature and its impact on man is an objective in most, if not all, state social studies standards. 

Nesse My favourite example of a cultural creation that people have tried to propose evolutionary explanations for is religion. I m in the midst of editing a book about this, called The evolution of subjective commitment. It seems plausible to me that natural selection has created in us, because of its selective advantage, the capacity to make irrational subjective commitments to ideologies as well as to other people. Once we have this capacity, it creates social structures. Once those social structures exist, they create new selective forces. There is co-evolution, not just of language and the like, but of social selective forces and brain mechanisms, that leads us to a wonderful complexity. 

The ability to communicate ensures that basic needs are met, preserves autonomy, and is a means of survival and safety. The inability of MV patients to communicate has the potential to result in anxiety, loss of control, and social isolation. If natural speech cannot be restored, then it is necessary to use methods that supplement or replace natural speech. For this purpose, an understanding of the anatomy of speech and language is essential. Ventilator-supported speech requires careful patient selection for those who can tolerate cuff deflation... 

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