No problem has exercised Africanists for so long and so heatedly as the slave trade. Now that any difference of opinion as to its morality has ended, debate tends to concentrate on its economic and political aspects, particularly on its magnitude and regional characteristics. In the past few scholarly generations, sophisticated statistical manipulations have supplied more evidence, but it has been concentrated on the number of slaves who arrived in the New World. Nonetheless, dearth of evidence (sometimes total) regarding the other components of the trade has not seemed to discourage efforts to arrive at global figures and, by extension, to determine its effects on African societies.
The present paper asks why this should be so, and wonders how any defensible conclusions can ever be reached about almost any facet of the trade that can go beyond ideology or truism. It concludes that no global estimate of the slave trade, or of any ‘underdevelopment’ or ‘underpopulation’ it may have caused, are possible, though carefully constructed micro-studies might provide limited answers. Under the circumstances, to believe or advocate any particular set or range of figures becomes an act of faith rather than an epistemologically sound decision