Developers shouldn't worry about something they can use. If you're young, people will naturally overestimate your ability to learn new things; if you're old, th

Developers shouldn't worry about something they can use. If you're young, people will naturally overestimate your ability to learn new things; if you're old, they will assume you already know older technologies pretty well ("If he's been doing this for twenty years, how could he not have encountered that at some point?")