If T16.2 fails: - Islam could potentially satisfy BC4 (but would need to abandon Tawhid) - The uniqueness of Christianity's BC-satisfaction would be challenged - The Born Rule structure's theological mapping would require revision - T16.1's claim of Christian uniqueness would need modification - The physics-theology bridge would lose a key differential If Tawhid could somehow satisfy BC4: - Islamic theology would need to be reinterpreted radically - The Quran's explicit rejection of "three" (4:171, 5:73) would need recontextualization - Orthodox Sunni and Shia theology would need revision - This would effectively create a new religion, not vindicate historical Islam T16.2 is robust because Tawhid is not peripheral but central to Islam. Any revision sufficient to satisfy BC4 would transform Islam into something unrecognizable to its tradition.