Absolute insider-outsider thought differences would block all cross-cultural knowledge

Evidence

Wittgenstein’s analogy between the believer and the non-believer can be extended to the relation between an insider in traditional African philosophy and the outsider who analyzes or describes this philosophy in the language of Western thought. … There is no absolute difference in thought between the insider and the outsider. The insistence on such difference would deny the possibilities of any valid transcultural representation of knowledge. — Frans Dokman, Beyond Bantu Philosophy_…, 568

Categorization

• QUESTION: This is the core philosophical stakes: if fully relativized, is ANY representation of another culture valid? Worth pursuing the strongest counter-argument.