 Why did David press the button?
"Your name is David Corbin. There were round dials set in a row above a speaker. Over the mesh-covered speaker, two knobs glowed red. "Your name is David Corbin. If you understand, press button A on your right." The mesh-covered hole and the two lights looked like a caricature of a face, set in a panel of dials. I reached down to the tightness that held my body, found the wide strap that held me and fumbled with the buckle. There was no sensation of place, no feeling of up or down, no direction. "If you understand, press button A on your right." "Your name is David Corbin." The name meant nothing to me, but I thought about it, watching the relentless lights that shone below the dials. Now it must tell me why I didn't. It must tell me.... "Your name is David Corbin. If you understand, press button A on your right." The red lights blinked out as I stood in patient attention, trying to outguess the voice. It was the only thing I saw that could help me, guard me against another shock like seeing outside of the clear portholes. "Do not begin operations until the others are removed from suspension." He was as still as death, motionless without warmth or breath as I hovered over him.
 He wanted to get more information from the voice.
 He understood his name.  The experiment was successful.  He wanted to leave the spaceship.  He wanted to get more information from the voice.