Jerry recently asked whether the 6 book plan is sufficient, and 
if not, then what books would we like to add.  I would suggest that 
one book that might be added would be capitalist production and 
accumulation on a world scale in its economic and political 
dimensions (the result of the first 6 books) and the ecology.  In 
other words, capitalism's natural conditions and limits (it being 
presumed that all natural conditions and limits are historically 
specific to particular systems of production in Marx's materialist 
and social conception of history).  
    Subsequently, Jerry asked the different, but closely related 
question as to whether the 6-book plan is NEEDED to understand 
capitalism, or would a further concretization of the categories 
developed in Volume III of CAPITAL be sufficient for 'understanding'? 
Obviously the answer might depend on what is meant by understanding 
here, e.g., the kind of understanding required to formulate strategic-
political positions at particular conjunctures so as to hasten the 
transition to a saner system?  If this is the kind of understanding 
we seek I don't see how it would be possible to avoid issues like 
international trade and the state.  However, if we go with the 6-(or 
more)-book approach, Paul C. raises the methodological problem: how 
do we start the rest of the books subsequent to the first one (i.e., 
CAPITAL)?  Is there some parallel between the start of CAPITAL with 
the commodity and how we should start the other 6 books?  Here, 
Michael P. argues that according to Marx we should not start with 
history (i.e., with historical origins), but rather more logically, 
in terms of the simplest categories defining the system of production 
(is that right Michael?).  The commodity fits the bill for CAPITAL, 
but what about for, e.g., landed property?  Here, I would think that 
the simplest category defining use of and property in land under 
capitalism would be the exchange value of natural forces and objects, 
i.e. rent.  But Marx already covered rent in CAPITAL, or so it seems. 
Perhaps the starting point for the book on landed property would be 
the category of rent as dealt with in CAPITAL III.  But then what it 
left to do with the book on landed property?  Perhaps the development 
of the spatial organization of capital, e.g., the close connection 
between the commodification of material production and the 
development of the division or 'antithesis' between town and country 
under capitalism?  Something like this procedure (done by someone 
more articulate, not to speak of more gifted, than I) must be required 
here.
    Sorry to temporarily displace the interesting debate on interest 
etc., but I didn't want this thread to get away.  Any thoughts on 
this or different tracks leading from Jerry's 6-book ruminations?
                Regards, 
                
                Paul B.