I love that on Fringe so far there has been three factors that lead alternate versions of yourself to become completely different people. DNA, different life choices, and free will. I think what Lincoln(may he rest in peace) taught us(or me, in particular) is that the choices you make and maybe even your DNA, those things have nothing on your free will. No matter what choices you have made in life, you can always become a better person, just as long as you want to. It’s really amazing.