Tom had this problem of getting up late in the morning and was 
always late for work. His boss was mad at him and threatened 
to fire him if he didn't do something about it. So Tom went to 
his doctor who gave him a pill and told him to take it before he 
went to bed. Tom slept well and in fact beat, the alarm in the 
morning. He had a leisurely breakfast and drove cheerfully to 
work. "Boss", he said, "The pill actually worked!"

"That's all fine" said the boss, "But where were you 
yesterday?"