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				Originally posted by Egekrusher  
Exactly.  
 
If we had to rely on first-hand experience for all of our knowledge, humans, as a whole, would not be where we are today. We'd still be living in caves, afraid to go outside because we don't know what's out there. We wouldn't know what's out there because we didn't listen to our ancestors, the people that came before us, or even the people who currently live around us.  
 
His argument holds no validity. Without books and the research and knowledge of other people, we'd still be cavemen. 
			
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 Thank you!  And by the way (this is for misterX), the "sheep" metaphor is for Christians, as stated in the Bible.  "The Lord is my shepherd, I shall not want".