"Maybe it was a music box. Scott shouldn't have felt depressed. The gadgetry would have given Einstein a headache and driven Steinmetz raving mad. The trouble was, of course, that the box had not yet completely entered the space-time continuum where Scott existed and therefore it could not be opened. At any rate, not till Scott used a convenient rock to hammer the helical nonhelix into a more convenient position. He hammered it, in fact, from its contact point with the fourth dimension, releasing the space-time torsion it had been maintaining. There was a brittle snap. the box jarred slightly, and lay motionless, no longer only partially in existence. Scott opened it easily now."