SEMAINE D'ÉTUDE SUR LE ROLE DE L ANALYSE ECONOMETRIQUE ETC, 
559 
at a maximum rate, but labour would remain stationary or could 
grow at a very small positive rate; so that a bottleneck due to a 
deficiency of labour would inevitably emerge sooner or later; hence 
the rate of real wages should be one of the variables of the pro- 
gramming. 
Once wages are greater than the subsistence level, workers can 
make choice among consumption goods, and the growth programme 
lepends on consumer’s choice unless the consumption goods are 
rationed by the planning authorities as will usually be done during 
1 war. I am sure that a planning model in which workers are allow- 
ed to choose consumption goods freely and the rate of growth of 
population is finite and depends on the per-capita consumption de- 
serves serious attention and should be granted a citizenship of our 
science. 
DORFMAN 
Professor MorisHiMA’s elegant model illustrates the ethical per- 
plexities that Professor KooPMANS has just discussed, For look: the 
balanced growth rate is given by the intersection of the curve show- 
ing the growth rate of the labor force as a function of the real wage 
with the curve showing the equilibrium rate of interest also as a 
function of the real wage. Technical change shifts this point of 
ntersection, but if it increases the real wage it decreases the rate 
of balanced growth, and vice versa. This model therefore portrays 
1 trade-off between high real wages and high rates of growth, which, 
of course, is to be expected in a full employment model. The novelty 
is that this conflict ef interest between present and future results 
from the possibility of technological change, whereas previous de- 
rivations of this conflict assumed constant technology. Be that as 
t may, this conflict presents just the sort of ethical problem that 
concerned Professor KooPMANS. 
This problem might disappear from Professor MoRISHIMA’s mo- 
lel if the curve portraying the rate of growth of the labor force also 
shifted, It probably does shift in real economies. In fact, one of 
lq, 
Morishima - pag. 31