Peter Norvig, Director of Google Research recently described the "Lake Wobegon" hiring strategy and contrasted it with two other strategies he dubbed "dot-com boom" and "hiring manager centric". The data is compelling and is worth considering, however I question the claim that Google hires people at the company level and then assigns them to projects (rather than hiring into project groups). That's just not been my experience (disclaimer: I don't work for Google so "my experience" is conjecture based on hearsay and public job descriptions).