Blindsight by Peter Watts

It was easy enough to retrace those steps; our course was there in ConSensus for anyone to see. Exactly why the ship had blazed that trail was another matter. Doubtless it would all come out during the post-rez briefing. We were hardly the first vessel to travel under the cloak of sealed orders, and if there'd been a pressing need to know by now we'd have known by now. Still, I wondered who had locked out the Comm logs. Mission Control, maybe. Or Sarasti. Or Theseus herself, for that matter. It was easy to forget the Quantical AI at the heart of our ship. It stayed so discreetly in the background, nurtured and carried us and permeated our existence like an unobtrusive God; but like God, it never took your calls.