Quote Originally Posted by ono View Post
Hmm maybe Jack doesn't agree with Kate's taking of Aaron. Or maybe the baby is Sawyer's, Claire and Aaron died and Kate simply named her baby after Aaron. Sawyer being the father would be a great reason for Jack not accepting it.
That was my first thought as well, but then I thought, okay is that too obvious, because this damn show loves for us to have so many different opinions on what is happening, and the explanation is usually something we never think of.

That's why you have to love this show, it's such a great mind fuck!