173 B
		
	
	
	
	
	
	
	
			
		
		
	
	
			173 B
		
	
	
	
	
	
	
	
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Law of the Excluded Middle
Every proposition has to be either true or false. There can be no middle ground.
P \lor \sim P
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Every proposition has to be either true or false. There can be no middle ground.
P \lor \sim P