But we have 36 right now. Magic number is usually used in North American sports for teams chasing a playoff spot. Simply put it means number of points needed to guarantee a place regardless of what other teams do, it's not intended to give all possible permutations after the event Since we are on 36, 1pt is enough. N Americans understand that if the chasing team loses then that will do it too, they don't care about what could have been after the fact.
Usually the sportscasters use it on the morning highlights show. "37 is the magic number for safety" sounds a lot snappier than, "depending on results between this team and that and this goal difference and that then the magic number may have been 33, 34, 36 or...".