It seems like ageism in tech is subject to a different dynamics compared to sexual or racial diversity. With age comes more work experience and most SV compani

It seems like ageism in tech is subject to a different dynamics compared to sexual or racial diversity. With age comes more work experience and most SV companies (even the unicorns) usually don't need it. Most of them is driven by pretty trivial tech anyways. As soon as you start looking into technically challenging fields, you see more and more older people: Sebastian Thrun is in his late 40s, Guido van Rossum is almost 60. People like Doug Lea, Lars Bak, Martin Odersky, Fabrice Bellard, Matthew Dilon, Simon Peyton-Jones etc are all well beyond their 20s. It makes perfect business sense. It's an overkill (and a recipe for disaster) to hire someone of that stature to build you a website. There's also nothing special about tech in this regard: if 90% of all legal work in the world could've been done by a paralegal, law firms would all be full of cheerful 20 somethings.