it's the combination of points, though. just like any other characteristics. it's the synergistic combination.
that's the point, gwynfryn. i.e., it isn't if you have a few of the characteristics, it's the range of characteristics and the combination which is used in anything in order to "diagnose". a headache is a headache. headache + sore throat might be flu. headache + sore throat + swollen neck + fever + vision problems might be meningitis. does that explain it better?
It seems as if this confusion over diagnosis is not a really new thing...