A-1050 ¥ien,Schwarzhorngasse 10/17 
Jan,17,1985. 
Dear Sandro, 
Thank you for your comments and for sending them so early 
( I did not get them until January, but that was my fault 
because I had not been in the Institiite for some time). 
Your comments are exceedingly helpful to me - I am rather 
isolated in this work and depend very much on criticism. 
My lines on the duality were claaly very inadequate; I have 
tried another shot at it which I enclose in form of a sketchy 
note. All your other points will be considered too. I wshall 
not give waymuch about the firfet lines of ray paper, hox^ever. 
There is notdoubt that Sraffa was concerned with aggregation 
and this is the subject of my paper. But perhaps I shall meet 
your objection at least half way if I add? The following paper 
deals with this aspect of his book which was perhapt not 
given very much attention in the vast literature of comments 
and appreciation and discussion of his book. 
My provocation does not aim at attacking anybody such as the 
neo-r&cardians. I would like to do something to shift the 
discussion of Sraaa on to a different track, becaxise what 
is usually heard in Trieste thuaatens to become rather infertile. 
I eidh I could do more, but mathematics is getting very difficult 
for me and I ara rather helpless in face of joint production. 
By the way what made me write this paper was really your 
lecture in Vienna. This lecture was rather different from 
your book on Sraffa, which systmatically refrained from 
putting anything into the book, from "interpreting ". u 
I hope you got your administrative troubles out of the way. 
Thank you again for the great help. 
With best wishes for pou and your family 
Yours,