Mark Zuckerberg, who founded Facebook at age 23, famously told an audience, "Young people are just smarter." And, Zuckerberg just paid $2 billion for Oculus — founded by Palmer Luckey at 21. One cosmetic surgeon says 28-year olds are getting Botox injections to look younger during start-up presentations to venture capitalists their own age. Is ageism all that pervasive in the tech world? Are white men learning what's all too familiar to women, ethnic minorities and the disabled?