Bantu Philosophy broke a philosophical consensus that Africans could not reason logically.

Evidence

In contemporary terminology, one could say that Tempels practiced “methodological conversion” (Cox 1998) and discovered the “polyphony” of his “self” (Hermans & Hermans-Konopka 2010). He expressed their worldview in words and published his book on Bantu Philosophy, arguing that the Bantu had their own logic. It was a breakthrough in philosophy and theology, which until that point had held that the Africans were primitives and could not think logically. — Frans Dokman, Beyond Bantu Philosophy_…, 76