Full text: The Trend 1968 Version

α (Y-P)=α ( - P)= Pα (I   -I)=?P
                  q                  q
Thus     I (II) =n?P+?P
The ?  ?P: Shift in profits  
the above reminds of Salter, Productivity + technical change.
B-factor:  ? is identified with 
a depreciative role 
based on obsolescence ("obsolescence rate")
So far we have considered that the businessman
compares relates the increase in profits to the current investment
and compares this with a standard ?.

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