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					Originally Posted by  troutman
					 
				 
				I understand there is a line of thought that all people are naturally bi-sexual (some more than others), and complete hetero-sexuality is to some extent learned or cultural behavior. 
 
IIRC, European explorers encountered some native cultures that were more bi-sexual. There are plenty of examples in the animal kingdom too. 
			
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Yeah I've heard that too.