The well-known s-shaped diffusion of technology curve generally works well in developed countries. But how does it perform in the very different context of developing countries? Across a wide range of new technologies imported from the developed countries it works poorly. In most cases the...

According to traditional welfare economics welfare occurs at the point where a good is purchased and some amount of utility is assumed to derive therefrom. According to Sen and others however one needs to look in addition to what use is made of the good after purchase. This paper throws new...