is versatile. Some retirees could unretire, and vodka plant workers might convert with not much retraining. I will explore some of this idea later. Harrod’s Knife Edge Solow’s neoclassical growth model developed from ideas published a decade earlier by Roy Harrod. Harrod had described a “warranted grow

nor that anyone at all has proposed thrift theory as here defined. It is my impression, not assertion, that modern consensus fits thrift theory given Harrod’s qualifier that attempted (ex ante) net saving (thrift) must not exceed the technological growth rate (warranted growth path). My impression is tha