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					Originally Posted by  IRISHMAFIA
					 
				 
				You need an act of interference by the runner.  A runner legally sliding into a base is not an act of interference. 
			
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 In other words, while legally sliding and making contact, intent is required, not just hindering the fielder. In other cases, the act of hindering/impeding/confusing is enough to rule INT, even without contact or intent. 
It's not 100% logically consistent, and it's not the way I previously interpreted the rule, but I can live with this interpretation. This philosophy also answers my question about the non-contact INT scenarios, too.