Silicon Valley’s “youth problem”—its culture of bar crawls and technical interviews that disadvantage older engineers—caused some hand-wringing in the New York Times recently. And the New Republic called Silicon Valley “one of the most ageist places in America,” interviewing a plastic surgeon who says he does a brisk business in Botox injections for tech employees terrified of wrinkles.

Read full article: Why it’s OK that startups prefer to hire younger workers