>Here is another problem, but it is of a quite different kind than the previous ones.
>
>A man, who lives on the 15th. floor of a building, uses the elevator every morning, when going to work, to go from the 15th. floor to ground level.
>
>In the evening, on his way back, he uses the elevator only up to the 8th. floor; he then uses the stairs to walk the remaining 7 floors.
>
>What reason can there be for such a behavior? (No, it is not a desire to exercise.)
>

Hi cannot reach above 8th floor button for some reason.