Technology blending is distinct from appropriate technology in that, compared with the latter, blending is likely to: (a) require greater investment per workplace created; (b) involve a larger leap in terms of skills; (c) require more imported technology. Whether technology blends work well depends on the technologies used and the circumstances in which they are used. In the context of technology capacity-building, in order for "blending" to contribute to technological dynamism, the blends must provide the basis for local innovation by seeking other feasible applications, adaptation to local situations and further improvements and refinements.
Most initiatives with technology blending are in early stages of planning or implementation so that evaluation is not yet readily available. The data available suggests that although some technology blending efforts have run into difficulties and some involve trade-offs between gains and losses in meeting various goals, the incidence of clear-cut successes would appear to warrant more vigorous experimentation and increased efforts to alert the scientific and technological community to them, as well as calling the attention of developing country decision-makers to the potential benefits flowing from a marriage of indigenous and high technology.
Advocates of integrating indigenous technical knowledge (ITK) focus on two approaches to the study of ITK. The first approach considers the study of ITK to involve interpreting and empirically analysing the validity of local agro-ecological beliefs and practices in terms of the conceptual apparatus of western agricultural science and economics. The second approach considers that the cross-cultural study of ecological belief systems necessarily challenges the conceptual apparatus of western agricultural science.