SEMAINE D'ÉTUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. : 
is true, but it does not seem sensible to found an analysis on 
the assumption that it is. In any case, the dual model is 
ntended to explore several possible paths to the steady state 
and to indicate the good and bad points of each alternative. 
However, as illustrated by this series of papers, our ap- 
proach to model-building is essentially organic. In time, the 
dual aspect of the model may come to seem less important and 
‘he two models may become more closely integrated and even 
be merged into one. This is not a matter of principle but of 
practice. 
sinne - pag.