 Putting aside for the moment the question of whether (13) correctly characterises a genuine notion of intrinsicality, let us call the notion it does characterise duplication preservation. (13), understood as a characterisation of duplication preservation has two important consequences. First, it has the consequence that identity properties, such as being Obama, aren’t duplication preserving. The reason for this is that, since Obama could have had a duplicate distinct from himself, there is a possible world at which Obama has a duplicate who is not Obama, and hence there is a possible world at which something having the property of being Obama has a duplicate which lacks this property. 