> ...about 70% of my knowledge today will be outdated in 5 years... I've been around for a while. Some knowledge has become useless, but I learned how to sniff

> ...about 70% of my knowledge today will be outdated in 5 years... I've been around for a while. Some knowledge has become useless, but I learned how to sniff out technology that's going nowhere and avoid it. Since then, I've rarely wasted my learning on things that become obsolete. Besides, the most valuable knowledge is typically how product managers, salespeople, and people that set budgets think. That knowledge evolves much slower than javascript frameworks.