The One Chance anti-smoking ad is designed to put your life in perspective and give insight into how fragile life really is. The ad starts from the beginning of time and essentially touches on every major event that has effected humans since Earth was formed.
From dinosaurs to your mom meeting your dad, the One Chance anti-smoking ad plays with perspective. The ad is attempting to play on the individual as a person and not part of a larger population. I actually really like this ad because it isn't overtly in your face about not smoking--it's a subtler way to get a point across.