Stop to consider the people you care about most. Some are no doubt only alive today because of advances in science and technology. Putting aside the the fact that many of us have been saved by vaccines, I think of my daughter, who has Type 1 Diabetes, saved by artificial insulin; I think of my father, who recently had an abdominal infection, saved by antibiotics; I think of my friend who nearly died in childbirth because of internal bleeding, saved by surgery.