In our everyday lives, most of us have a buffer between life and death, and a comfortably huge one at that. We have insurances, access to a health care system, houses that protect us from thunderstorms, access to clean drinking water and nutritiuous food, neighbors that would hopefully get alarmed if we did not leave our apartments for too long. And still, we seem to feel worried. What if I get cancer? What if there was a substance in this meal that I am allergic to? There is much to worry (and some of it for good reason), but this does not cover the main fact: the buffer between life and death tends to be much bigger than we believe.