should only be used for educational activities. Paulo Freire has argued that the terms ‘extension’ and ‘participation’ are contradictory. There are philosophical reasons behind these disagreements. From a practical point of view, however, communication processes that conform to each of these four paradigms are currently being organized under the name of extension in one part of the world or another. Pragmatically, if not ideologically, all of these activities are considered to be represented in agricultural extension. See also Cooperative extension service Diffusion of innovations Extension agency Farmer Field School Farmer Research Committee Home demonstration clubs Participatory technology development Participatory video Spore (agricultural publication) Krishi Vigyan Kendra References External links Extension pages at the Food and Agriculture Organization (FAO) Extension at the National Institute of Food and Agriculture Extension education Agriculture International development Rural community development