 What did David determine the black box was for?
[Transcriber's Note: This etext was produced from Planet Stories November 1952. Over the mesh-covered speaker, two knobs glowed red. The mesh-covered hole and the two lights looked like a caricature of a face, set in a panel of dials. Now it must tell me why I didn't. It was the only thing I saw that could help me, guard me against another shock like seeing outside of the clear portholes. The first swung back to reveal a deep closet holding five bulky suits. He was as still as death, motionless without warmth or breath as I hovered over him. It waited for human hands to make it operate. This room was filled with equipment that formed a room out of the bordered area I stood in. They stood for anything I might guess, and something kept pricking my mind, telling me I had no time to guess. Four people in all, depending on a blind helpless fool who didn't know their names or the reason for that dependence. I went from the nose to the last bulkhead in a frenzy of floating motion, looking behind each door until I went as far as I could. They both ended in the lead shield that was set where the swell of the curve was biggest. It meant the engine or engines took up half the ship, cut off from the forward half by the instrument studded shield. I had literally been reborn in this room, equipped with half ideas, and no point to start from, no premise to seek.
 A device to deliver medication
 Storage of canned food  A navigation device  A device to deliver medication  Testing equipment