Abstract

Based on a specific case study of four alternative sanitation systems, the paper discusses the concept of ‘appropriate technology’ from an economic point of view. It argues that simple criteria of ‘appropriateness’ often used, are based on concepts such as ‘capital-intensity’ and ‘labour-intensity’ and that these concepts are ambiguous when applied to a specific case. The paper suggests an alternative definition based on a shadow pricing method (economic evaluation) but it also points out problems with such an approach. Finally, the paper emphasizes that economics is not all that matters but that it is one important aspect of the final choice of technique.

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