A Speculative Model of Coupled Mirror Universes

The observable universe (A) globally coupled to a complementary mirror universe (B) through a non-local, antisymmetric geometric interaction. Λ (dark energy) is reinterpreted as an emergent geometric effect, with the model’s natural home in quaternion algebra (A↔i, B↔j, membrane↔k = ij = −ji). Offered as a well-formulated question, not a finished theory — with its four epistemic layers kept visible.