Oh, twaddle. What differencse between "identical" twins challenge is the idea that being is purely genetic. Fortunately, no one actually believes in that idea.

Oh, twaddle. What differencse between "identical" twins challenge is the idea that being is purely genetic. Fortunately, no one actually believes in that idea. All apples of a given variety are (I think) genetically identical, because of the way they're grown. (You start with a rootstock of some kind of apple tree that doesn't produce nice fruit, and then graft on the thing you actually want. This has to be done because if you grow apples from seed you tend to get trees that are very unlike their parents.) But -- gasp! -- not all Granny Smith (or whatever) applies look identical. Is this evidence for a non-physical component to applehood?