SEMAINE D'ÉTUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. 985 
AL LAIS 
A complete explanation would be too long. My point is only 
that if we assume that the total real value of capital is at a certain 
level so the surface of maximal possibilities has a certain position. 
as indicated on the following > 
aptalistic optimum 
TPIT 
"ssrbliti. 
Q, and Q, are the productions of two consumption goods, for 
instance, butter, shoes, anything. If capital is varying, this frontier 
is varying also and my point is that a maximum frontier does exist, 
and that it characterizes an optimum capitalistic structure. This 
question was studied quite extensively in my 1963 Cambridge paper. 
In fact, the conclusion can effectively be that we are very near 
the optimal situation as far as capital is concerned; that is, so far 
as the capital distribution over time is concerned (see my paper 
§ 410-411). But so far as other factors are concerned, this is not 
so and specifically, the difference between French and American 
productivity can be explained only if the other factors are taken 
‘nto account (see my paper 8 --r 4-2" 
[ FONTIEFR 
In applying his analytical approach to interpretation of differen- 
ces and similarities in the relative magnitude of the labor ad capital 
‘nputs in several countries. Professor ALLAIS apparent'v assumes 
, AHais - pag. 280