Life is unpredictable and the lack of control over it can lead to feelings of dissatisfaction and failure, or in the cases presented below, to wonderment and maybe to the feeling of being protected and blessed (not sure by whom). You can beat the odds sometimes, and wonder what factors lead to that? Is luck quantifiable?
Life is never simple, even when it looks like it. Simplifying may be useful for a superficial understanding, but it should not be used for decision-making, especially when those decisions affect other people.