Kweli science started in Africa, i have heard of so many such cases from surgery to metallurgy, an African being "kept free" aka "freeman" in some university, research lab, factory, hospital in return for his knowledge which is codified and then given to a nearby mzungu as a nobel prize winning scientific discovery e.t.c. Racism, ukabila e.t.c kitu mbaya sana!
Meru Holiness