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					Originally Posted by  J.B.
					 
				 
				IIRC this is not a bug, but the description is a little misleading! 
			
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 Its not really misleading. Every single skill works this way.
Skill level 2 description replaces skill level 1. and 3 replaces 2.
So if level 1 of a skill is +1 int and and level 2 of that skill is +3 int, then the difference from 1 to 2 is 3-1=2 int.