Mike's post concerning "levels of abstraction" and 
"moral depreciation" makes me nervous.  No, the  
feeling is not due to a fear that I've been  
harping about "moral depreciation" at the wrong  
level of abstraction but rather a fear, perhaps 
unwarranted, that I am about to see an all too 
familiar Marxist dodge.  Let me explain. 
 
When a concept or though of Marx's doesn't fit into 
the standard interpretation of Marx, I have often 
heard that "it will be dealt with later when we  
reach that level of abstraction."  My experience  
teaches me that we never will reach that level. 
 
I do note that Marx himself does introduce "moral 
depreciation" as part of the depreciation of fixed 
capital when he takes up the concepts of absolute  
and relative surplus value.  I would also point out 
that Fred and I have reached clarity about our  
disagreement without telling each other that we are 
on the wrong level of abstraction.  For the record,  
Fred and I have an advantage, we have been house mates  
and have discussed and argued about concepts in Marx's 
CAPITAL for over 20 years.  As I recall, we started 
this discussion about "reproduction values" in the  
summer of 1981.   We are both clearer about the issue 
now than we were then. 
 
At the level of Vol. I, the issue is basic.  Fred claims 
that as "moral depreciation" occurs  it is a deduction  
from surplus value.  I claim that much of it is  
anticipated and included in the value of constant capital.   
Thus, as moral depreciation occurs, Fred and I would differ 
on the calculations concerning the rate of surplus value. 
This is the level of abstraction where we find ourselves.   
Thus, like Marx, I do not think the notion of "moral  
depreciation" can be put off entirely until Vol. III  
or some later work.  It is thrust upon us as we discuss  
the division of the working day. 
 
 
 
John