Agreed. I try to explain it to my family by pointing out the most likely proximate causes of death in old age: A) cancer, Alzheimer's, B) heart disease, C) orga

Agreed. I try to explain it to my family by pointing out the most likely proximate causes of death in old age: A) cancer, Alzheimer's, B) heart disease, C) organ failure, etc. Solving "aging" means we don't just have to solve A, B or C but rather 'All of the above'. Much harder.