Neuroscience over the next 50 years is going to introduce things that are mind-blowing.
If you put a ten dollar bill under the rug instead of spending it, that is capital formation. It represents ten dollars' worth of something that might have been immediately consumed, but wasn't.
I have no problem being 53. Why would I want to be 35 again? I want to discover who I am in my 50s. And if I tried too hard to look younger, it would seem that I was uncomfortable with who I am, wouldn't it?