 Why isn’t Retief satisfied when the Groaci finally show him the missing cruiser?
"Whaffle left here three months ago," Retief said, "leaving me in charge." Outside, Retief stood for a moment looking across at the deeply carved windowless stucco facades lining the street, then started off in the direction of the Terrestrial Consulate General. Retief backed into the opening to a narrow crossway and offered further verbal familiarities to the drunken local, who followed, furious. Retief backed, rounded a corner into a narrow alley-like passage, deserted, silent ... except for the following Groacian. Two Groaci wearing heavy eye-shields and elaborate crest ornaments indicative of rank rose as Retief entered the room.
 Retief believes the cruiser they show him is a decoy. The real missing cruiser was at least twenty-tons, which is much larger than the ship the Groacians reveal.
 Retief believes the cruiser they show him is a decoy. The real missing cruiser was at least twenty-tons, which is much larger than the ship the Groacians reveal.  Retief believes the cruiser they show him isn’t human made at all, meaning the real cruiser is still out there.  Retief believes the cruiser they show him is a replica, meaning the real cruiser is still out there.  Retief believes the cruiser they show him is a decoy. The real missing cruiser was a battle ship, while the cruiser they show him is of the domestic variety.