SEMAINE D ETUDE SUR LE ROLE DE L ANALYSE ECONOMETRIQUE ETC. 
071 
ten or fifteen years through a quickening of the world con- 
science on humanitarian grounds and also in the enlightened 
self-interest of the more advanced countries. Isolation is no 
longer possible, physically, psychologically or organizationally. 
The influence of information, ideas, advice and aid from out 
side would be an increasingly important factor. 
2.5. A structural transformation of the whole society is, 
nowever, indispensable to make conditions fit for rapid eco- 
nomic growth. Without such transformation, any amount of 
help from outside would be ineffective. The experience of many 
countries during the post-war period would corroborate this. 
3. THE ScienTIFIc REVOLUTIO 
3.1. It is also necessary to develop the outlook of science 
and the experimental attitude of mind in order to acquire 
knowledge of natural and social forces and to invent new tech- 
niques for initiating material and social changes. This is the 
only way in which decisions can be made increasingly in a 
rational manner, in accordance with principles of objective or 
scientific validity based on relevant data and correct reasoning, 
instead of on the sanction of authority based on status and 
power or custom and conventional or revealed rule and laws 
This may be called the scientific revolution. 
3.2. The need of what I have called « the scientific revo- 
lution » is recognized, but has not received sufficient attention. 
[ have considered some aspects of this problem in an attached 
note on « The Scientific Base of Economic Development ». 
1. MODERNIZATION OF SoCII': 
4.1. The social transformation and the scientific revolution 
are both necessary. These are but two aspects of modernization 
which can be distinguished but not separated. The social tran- 
141 Mahalanobis I - pag. 3