traditional knowledge, Evans, cited reference, This article argues that concern with technical knowledge, which is indigenous to disadvantaged rule groups, must go beyond, an interest in extracting fragments of it to make marginal improvements to existing types of R and D project. The main issue must be beats to which such groups are involved in, and have influence upon, the technical change which affects their lives. Arrange a potential uses for indigenous technical knowledge is therefore far wider than those involved in Rand D, and the central concern must be with augmenting the whole spectrum of indigenous capabilities to create, transform and use technical knowledge. This implies there must be a shift from the dominant approach to the rule of technical change, which really seeks to introduce into roll society techniques conceived and developed outside it. Rather, one must seek the technical development of roll society, which enables it more effectively to pursue and control its own path of technical change.