A Hypothesis of Simultaneous Presence in Intersecting Parallel Worlds

We propose a conceptual hypothesis involving two independently modeled spacetime worlds embedded—or represented as finite-thickness world-regions—in a common higher dimensional ambient manifold. During a finite, nonzero interval of geometric overlap, each world retains its own intrinsic temporal structure, while an explicitly defined synchronization relation associates selected event pairs with a common label τ. We hypothesize that, within this overlap interval, one and the same entity P may possess two distinct world-indexed locations, one in each world, at a synchronized value τ∗. This bilocation claim depends on a primitive cross-world identity relation and is not inferred from geometric overlap alone. The framework further assumes transit rather than reflection: after the overlap interval, the two world-regions continue through one another and separate in the ambient description. We distinguish geometric intersection from dynamical interaction and information transfer, neither of which follows from intersection alone, and distinguish numerical identity from counterpart similarity and post-branch continuity. The proposal is presented as a formalized conceptual hypothesis rather than as an empirically established physical theory. We identify the additional geometric, dynamical, operational, and empirical structures that a future realization would require to become testable. If a consistent mathematical realization can be constructed, the framework may clarify questions concerning multilocation, cross-spacetime synchronization, persistence, and observability.