> 1. At Google, code has to be designed, written, tested, and reviewed. You > can't just start writing and shipping stuff, partly because there's so much > infrastructure, and partly because you pay for shoddy code later. Google > has long outgrown the kind of "start-up" velocity that you feel at > Facebook.

you are assuming it's impossible to design, write, test and review a small change or a small set of changes and get it into production quickly. The assumption is wrong, all you need is good people, the right processes (formal and informal, i.e. discipline) and the right tools. That's what continuous deployment is about