> There's an awful lot of negativity here, but as someone who's 55 and has earned a good wage since I was 17, I really wish I had taken investing more seriously from the very beginning. While I knew of compound interest, I really didn't understand it until like a decade ago. If I'd started putting 5% of my money into a target retirement plan from 17, I'd be retired now. As it is I'm not doing badly, but I really wish I'd started earlier.

I'm 55, too. If I'd started studying HTML, CSS, JavaScript, Python, and Rust at 17, I'd be retired now. Waitaminnit....

Sarcasm aside, target retirement plans wouldn't come along for decades. Investing was very, very different when we were 17. And many of the people who were 55 when we were 17 had just lost a terrifying amount of their life's savings in a stock market crash that made Taleb rich because he'd bet against the market.

It seems extraordinarily unlikely that a 17-year-old today should do exactly what we wish we could have done when we were 17. About the best they can do is follow advice that's now centuries old: make friends, learn skills, live below their means, and, maybe, earn credentials.