A short man named Joseph lives on the 10th floor of a building named "Joshua"
Every morning when he goes for a jog he takes the elevator to go to the ground floor...
But while going up again he uses the elevator only if other people are also there
otherwise he goes till 8th floor, gets out of the elevator
and climbs up the remaining floors by stairs
Why does Joseph do this ?
He was a Dwarf and hence could not press the button in the elevator for the 9th and 10th Floor.