How was it found to be wrong? How do you check whether a social theory is at odds with reality?

Well, there you have it - you do use a sort of "experimentation" in social sciences. Why, then, are social theories there not tested under such criteria? For instance, Theory A is falsifiable by a professional survey stating that the number of murders per day has decreased by less than 10%. (It predicts, of course, that the number of murders should decrease by 10% or more, for some reason known only to its originator, and some illuminaries.)

(Ask Konqueror, KDE's web browser.)