SEMAINE D'ÉTUDE SUR LE ROLE DE L’ANALYSE ECONOMETRIQUE ETC. 
083 
tures that we find in the empirical data in a simple way. This sta- 
tement is valid for any theory whatever. It is impossible to declare 
for any theory « that is the right and definitive theory ». 
We do not know if the Newton Theory of gravitation or the 
Einstein Theory of gravitation is correct or not — we don’t know 
that — what we can say is that the course of events is consistent 
with their correctness, at least as first approximations, and I don’: 
say anything more. 
I would add that this theory and its associated may not be 
right, but at least, as far as I have been able to judge, they have 
the merit of having been able to force people to think about many 
interesting features of reality (see my paper § 337). 
Worp 
[ am extremely impressed by the whole of Professor ArLLars 
presentation. I have received many books and papers by ALLAIS, 
but I have never had the opportunity to listen to an exposition like 
this. Maybe this is the first time that Professor ALLAIS gives such 
an integrated exposition, and if so I am very happy to be one of the 
first listeners. It adds to my admiration that his material, from 
the criteria of the Study Week, is very important. It is a question 
of course to what degree his views will be accepted, but there is no 
doubt that this is the type of material which we are supposed to 
present and discuss. 
My own comments and remarks are very small. My first que- 
stion mark in the margin refers to your notations for the capital. 
If the total is divided in parts, then the usual notation is that the 
parts have indexes, and the total has no index. In your system 1 
find that the total has one index, and one of the parts has no index, 
and this is a little confusing 
Allais - pag. 287