Indigenous Communication includes the transmission of entertainment, news, persuasion, announcements, and social exchanges of every type - it is an important aspect of culture and the means by which a culture is preserved, handed down, and adapted.
Exogenous communication includes mass media, schools, agricultural extension, bureaucracies.
1. Indigenous communication has value in it's own right
2. Exogenous channels have limited range
3. Indigenous channels have high credibility
4. Development programmes can use indigenous communication to collect and disseminate information
5. Indigenous channels offer opportunities for participation by local people
6. If indigenous communication is ignored, the result may be inappropriate development efforts
"Indigenous Communication and Indigenous Knowledge" by P. Mundy and J. Lin Compton - Development Communication Report, no. 74 1991/3 - page 4.