 
        
        As in some previous attempts, where Harrod in his model suggested that the economy could grow forever, and that doubling the savings rate would double the growth rate, but it seemed that the real world did not work according to that model. Abdel Azim Hanney* In the early 1950s, most of what the Keynesians wanted to say about the wealth of nations was compiled into two sets of quick and improvised models, but none of those models could clarify the essence of the problem. In 1946, economist Evsey Domar put forward a more problematic possibility: that the economy could become more and more unstable due to a permanent wobble between runaway inflation
 
        
         
        
        