Lost season finale tonight! I’m so excited!

I know there are many questions people want answered, but here are the top questions on my mind:

(1) What exactly were Sawyer and Miles feeding poor Aaron during the “day” they were looking for Claire? Dharma-brand infant formula?

(2) Why didn’t we get to see the two of them struggling with the diapering situation on their own?

(3) If Kate supposedly gave birth five weeks ago, how does she explain those abs? For that matter, how does Claire?

And, I guess there might be a few other minor issues to be cleared up too.