A human and a computer are equally good at clocking one person into work on time. A computer is probably much better at tracking the hours of 500 people, using

A human and a computer are equally good at clocking one person into work on time. A computer is probably much better at tracking the hours of 500 people, using this to estimate the probability of various inconvenient person-mixes (the foreman and backup foreman are both sick!), and using this to generate schedules. A person is probably better than a computer at deciding whether or not it's better to clock out of work eight minutes early to surprise the wife with flowers. Computers and people differ pretty wildly in their thought processes and abilities.