This commentary proposes that the decision to hold findings from te ao Māori and biomedicine in productive tension—rather than resolving them into a single integrated account—is not a methodological preference but a constitutional obligation grounded in the te reo text of Te Tiriti o Waitangi. Drawing on the ontological turn in research methodology and on recent Waitangi Tribunal findings, the commentary argues that the two texts of the Treaty/Tiriti constitute two different worlds of reality: the English-language version enacting a hierarchical transfer of sovereignty; the te reo text enacting complementary, coequal spheres of kāwanatanga and tino rangatiratanga.