Actual wisdom on the nature of change and humanity doesn't go out of style!
It also takes decades to earn. Who knew? The number of people around here who consider months of experience to be an expert is astonishing. Even more impressive is how no-one seems to learn. I see people talking about coin devs with 10-20 years experience as if that's meant to be incredible; no, it's about right, and describes (for example) the devs for Bit, Lite & Doge.
Edit: 10-20 years development experience. Obviously having more than 2-3 years of coin development experience is really difficult, and more than 5 would likely mean you're Satoshi :-D