Previously on Grey's Anatomy, pretty much all of Season 3.
The sun rises over Seattle and actually signifies something new -- a calendar year has now passed. Meredith's voice ushers us into this new phase: "In the practice of medicine, change is inevitable." The Chief puts his glasses on at his desk, clearly still Chief. "New surgical techniques are created, procedures are updated, levels of expertise increase." There's a whole mess of interns in the locker room; were there really this many when the fab five started out? "Innovation is everything. Nothing remains the same for long." That is, nothing except George starting over as an intern after failing his exam; he walks into the locker room with all the newbies. "We either adapt to change, or we get left behind.