“…One would imagine that the decision to develop and adopt an innovation would depend on the degree of uncertainty and risk to the producer. It has not always been possible to ^See, for example, Antle (1984Antle ( , 1986, Binswanger (1974aBinswanger ( , 1974bBinswanger ( , 1978, Fellner (1961), Hayami and Ruttan (1985), Schwartz (1969, 1982), Kennedy (1964), Nordhaus (1973), Sato (1970), Sato and Ramachandran (1987), Sato and Suzawa (1983), and Stevenson (1980). explain why certain technologies have been developed and adopted in one country or region and not in another.…”