"Recoding?"

And already his nerdy little brain is jumping ahead, and you can almost see it in his eyes, the way he's making jumps in logic that defy most rational thought.

"You can't recode nanotech, though. You'd have to introduce a new strain of it into the...breeding pool, I guess you'd call it. They're like viruses. Virulent strains can recreate themselves...oh! Is it the kind of nanotech that can reproduce itself? That is kinda important I guess."