Frankly, it is my belief that Marxian political economy can 
absorb the valid elements of mainstream economics (e.g., supply & 
demand, game theory) _and_ go further and ask other questions 
(the historical and institutional nature of capitalism, etc.) 
that mainstreamers don't or can't face. (This is even though 
Marxists may not be interested in such neoclassical questions as 
the spot price of wheat (Andrew K's example).) If you'll forgive 
my scientism, I think Marxian p.e. can include the valid elements 
of neoclassical theory the way relativistic physics includes 
non-relativistic (Newtonian) physics.  It's too bad Marxian p.e. 
hasn't tried to do this more, to treat neoclassical economics as 
a special case, depending on special assumptions (such as the 
ontological primacy of equilibrium states), etc. But I'm 
preaching again, so I'll stop.
in ope-l solidarity,
Jim Devine   jdevine@lmumail.lmu.edu
Econ. Dept., Loyola Marymount Univ., Los Angeles, CA 90045-2699 USA
310/338-2948 (daytime, during workweek); FAX: 310/338-1950
"A society is rich when material goods, including capital,
are cheap, and human beings dear."  -- R.H. Tawney.