Just like we all know the earth is flat and that it must be the centre of the universe.
You really should speak to Ferdinand Magellan and ask why the set out to find a westward trade route because he's going to fall of the edge of the earth, or maybe you just think Galileo was stupid and would like to tell him is observations where pointless .
After all did you think the earth was round or something stupid like that, not pear-shaped [obligatory wikipedia quote http://en.wikipedia.org/wiki/Spherical_Earth#cite_note-8 ]
Science is all about testing preconceived ideas, there may well be no evidence to prove a haunting but that's why you investigate scientifically. You never know you might just find there is something odd going on 'the root cause of the belief' this in turn you instigate and then possibly you find something mundane. An odd effect of the central heating and natural air currents due to the shape of the building causing sudden cooling of a single room, or heaven above something as earth changing as the earth not being flat...