ABSTRACT
As an indicator, change in the direction of the flow of resources is crude, being neither quantitative nor detailed; other indicators are needed which are more precise and more sensitive. Moreover, it would be surprising if a single measure were available for such a complex set of activities as those which comprise the course of adopting and diffusing a foreign technique: rather, one would expect to find many measures, some of which would apply to no more than a single step on the course, others of which might apply to two or three steps.
