Taken from Grey's Anatomy season premiere. I love this view - I recently had a similar conversation with my brother about the 7 year recreation theory. Then this episode aired and said it perfectly!!
"Every cell in the human body regenerates, on average, every 7 yrs. Like snakes, in our own way, we shed our skin. Biologically we're brand new people. We may look the same, we probably do. The change isn't physically, at least not in most of us. But we're all changed completely, forever."
"When we say things like people don't change, it drives scientists crazy. Because change is literally the one constant in science. Energy, matter - its always changing, morphing, merging, growing, dying. Its the way people try not to change that's unnatural. The way we cling to what things were instead of letting them be what they are. The way we cling to old memories instead of forming new ones. The way we insist on believing despite every scientific indication - that anything in this lifetime is permanent. Change is constant. How we experience change is up to us. It can feel like death, or it can feel like a 2nd chance at life. If we open our fingers, loosen our grips...it can feel like pure adrenaline. Like at any moment we can have another chance at life. Like at any moment we can be born all over again."
Wow - isn't that exciting!!!