For thirty years, Johnson had arrived at work at 9A.M. on the dot. He had
 never missed a day and was never late. Consequently, when on one particular
 day 9 A.M. passed without Johnson's arrival, it caused a sensation. All
 work ceased and the boss himself, looking at his watch and muttering, came
 out into the corridor.
 
 Finally, precisely at ten, Johnson showed up, clothes dusty and torn, his
 face scratched and bruised, his glasses bent. He limped painfully to the
 time clock, punched in, and aware that all eyes were upon him, said, "I
 tripped and rolled down two flights of stairs in the subway. Nearly killed
 myself."
 
 The boss looked at his watch and said, "To roll down two flights of stairs
 took you a whole hour?"