If you go from the first floor to the fourth floor you have actually walked up THREE flights of stairs NOT four!
1st to 2nd floor = 1 flight
2nd to 3rd floor = 1 flight
3rd to 4th floor = 1 flight
1st to 4th floor = 3 flights
Flights must be climbed in a Goodwin College building.
Only count flights going up, not down.