I may be making too basic of a step, but we have certain biases which we set up, such as glowing red things are hot, things that come to a point are sharp and getting hit hurts. They are not always true. Most societies do have some prejudices. These are often found (from my understanding) to be based on misunderstandings, previous theorized wrong doings, or power stuggles (history is written by the voictor).
Prejudices support internal economy in a way. This, for example, was practiced when the Japanese started creating and shipping superior vehicles into America. America's response to their success and their own failure was to add propaganda and support american companies. This ideal works only on the basis of an internalized economy. However, as a whole it is a significant waste since there is obviously a cost associated with no significant overall benefit beyond that of isolation.
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Success is not the key to happiness. Happiness is the key to success.-Albert Schweitzer, philosopher, physician, musician, Nobel laureate
(1875-1965)
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