What is this out of the park career path I'd have had choosing ruby? Can you share some more details?

Almost the best advice I can give to a developer is stop being fixated on language, and start being fixated on how to solve business problems, on communicating coherently (and like a human being), and being able to quickly grok complexity. The language you program in is almost the least important part of the offer (as long as you're competent in it)

Where? At Facebook? Or somewhere else?