If you believe what I just said, welcome to the world of denial. We are supreme at denial: Nothing's going to happen to us.
The difference is that in 1900, the average life expectancy was around 48. It is now 84. People are living longer. We never expected to live this long. I think that's been a huge shift. Medical advances have changed a lot, but people haven't changed that much. Our basic needs haven't changed, yet we're not able to provide them the way we used to.