No correction after all. All right, then. Aside from arching a brow, Callaghan doesn't question it, instead taking Sonja's introduction and bow as a cue for his own greeting; "Professor Robert Callaghan. I'm also a fairly new arrival, or at least wasn't here during that whole 'sleep' business."

Once, he might have suggested they learn about this place together; now, he just smiles politely, tilting his head towards her in gesture.