A man is flying in a hot air balloon and realizes he is lost.
He reduces height and spots a man down below.  
He lowers the balloonfurther and shouts, 'Excuse  me, can you help me? I  promised my friendIwould meet him half an hour ago, but I don't know  where I am.'
The man below says, 'Yes. You are in a hot air balloon,hovering approximately 30 feet above this field. You are  between 40 and42 degrees North  latitude, and between 58 and 60 degrees  Westlongitude.
''You must be a programmer,' says the balloonist.
'I am,' replies the man. 'How did you know?'
'Well,' says the balloonist, 'everything you have told me is technically  correct, but I have no idea what to make of yourinformation, and the fact is I am still  lost.'

The man below says, 'You must be a project manager',
'I am,' replies the balloonist, 'but how did you know?'
'Well,' says the man, 'you don't know where you are, or whereyou are  going. You have made a promise which you have no idea how tokeep,and you expect me to solve your problem.'