Incidentally, I agree, although Seligman is disingenuous because he does not mention economics or various managerial 'sciences' in his list. Most of what passes today for research is high brow journalism, social-political commentary, or literature rather than empirical science. Universities are, for th emost part, credential manufactures and reproducers of social class systems rather than institutions pursuing knowledge in the traditonal sense. There are many reasons for that, but the key among them is the overproduction of college graduates - those people need not only jobs, but social status that goes with them.
As Pierre Bourdieu (_Homo Academicus_) demonstrated, different departments are credential manufactures for different political factions - anthropology sociology or social psychology tend to be associated with the left, whereas econ, poli-sci, or law tend to be associated with the right. Hence Seligman's missive is nothing more than a thinly veiled partisan attack - which is to be expected of any hack prostituting his/her dubious talents for mouthpieces broadcasting ruling class ideology.
The bottom line is, however, that as the supply of knowledge workers increases, so does the volume of intellectual commodity they produce, which has the net effect of the declining science/drivel ratio.
wojtek