The passage suggests that an assumption underlying non-economist social scientists dismal of economics as dismal is that
A.
positive-sum outcomes cannot, by the definition of the power model, exist
B.
all social sciences founded on pragmatism instead of idealism are dismal
C.
zero-sum interactions models are inherently optimistic in their view of the future
D.
scarcity does not necessarily exist as a controlling factor in social systems
E.
economics is anti-utopian by nature, proposing a more realistic view of the future