A golden light appears around them -- a halo -- as Nancy strokes her son's hair, and weeps. The Doctor restrains Rose. Nothing so beautiful could be going wrong. The Doctor urges them to figure it out, to recognize Nancy as Jamie's mother, the way she finally recognized herself. The nanogenes glow brighter, and then Nancy falls back as they disappear. The Doctor nears Jamie, whispering to himself: "Give me a day like this. Give me this one." God's grace is the reminder that you always have been free -- it's just the default setting to be too afraid to reach for it -- and the gentle push that turns you around to face it. God's grace is a day like this, a genocide redeemed in a single day where no one dies. When the Doctor gets objective evidence that what he's chosen to be is informed by his actions, a well-formed equation, and he's reminded that he can dance again. That he never forgot how. This show is not fucking around.
The Doctor reaches out to Jamie's mask, his nerves and face alive, and removes it. There is Jamie's adorable face beneath. Nancy stares, and the Doctor laughs, taking Jamie up into his arms. "Welcome back! Twenty years 'til pop music -- you're gonna love it." Looks like that, he'll probably be making it. The Doctor hugs Jamie, laughing, and explains to Nancy that the nanogenes recognized her DNA -- they didn't change her because she was changing them, providing "superior information." Nancy as a blueprint for Cool Britannia doesn't throw me in the very least. "Mother knows best!" the Doctor laughs, dropping her son into her arms. It's sketchy in that sci-fi way, and it pings my natural hatred of the dominant paradigm about who's driving the bus and how old you have to be, who's got the "superior information," but: I don't piss on grace. Another bomb lands nearby, and Rose gets worried about their impending doom, but the Doctor assures her that he's taken care of it. But how? The Doctor: "Psychology!"
The bomb drops toward them, and is suddenly stopped in midair by blue science. Captain Jack appears in the tunnel and calls down to them. "Good lad!" shouts the Doctor. He's in. The bomb, which Jack is straddling Slim Pickens-style, says "Schlecter Wolf." One can assume. Apparently there are better words, but I guess that depends on what the "bad" in Bad Wolf really means. It could possibly fit. My friend Karen says that it stands for "Broken As Designed." Captain Jack tells them that the bomb's already started to detonate, that the science has it in stasis, but that it won't last long. "Change of plan," says the Doctor. "...Don't need the bomb. Can you get rid of it? Safely as you can?" Captain Jack nods, and tells Rose goodbye. In this certain way. And she says goodbye, and he disappears, and Rose is sad. He pops back in: "By the way...love the t-shirt." Me too. They grin at each other, and Jack is gone, and his ship takes off into the sky.