01:830:364 Chapter Notes - Chapter 5: Twin, Evolutionary Arms Race, Xerostomia

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It is a system that detects danger and produces responses that maximize the probability of surviving a dangerous situation in the most beneficial way: it is in other words a system of defensive behavior. Emotional behavior, like defensive behavior, evolved independent of conscious feelings, and that we should not be too quick to assume that when an animal is in danger it feels afraid. Our quest to conquer nature we have created new forms of danger: cars, weapons, nuclear power, the dangers we face are not fewer or less significant than those of our animal ancestors. Even a casual analysis of the number of ways the concept of fear can be expressed in the. English language reveals its importance in our lives: alarm, scare, worry, concern, etc. The so-called ascent of man occurred in spite of the continued existence of fear rather than its expense. Fear cuts deeply into the mental fabric of persons and societies.

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