A Force-Field Account of Local Space and a Conceptual Proposal for Same-Level Parallel-Universe Passage

This paper proposes a conceptual model of how a local region of space can persist as a distinct domain. The central claim is that a local space does not exist independently. It must be sustained by a force field that supports its boundary and keeps it in balance with a larger surrounding whole. Using the limited analogy of a soap bubble, the paper distinguishes nested structure from side-by-side contact structure, and interprets the latter as a possible form of several parallel local universes coexisting at the same level. On that basis, the paper discusses possible observational signatures of contact barriers, a parameter-matching procedure for opening a passage, and the dilemma created by frequency resonance. Finally, the paper distinguishes same-level passage from the usual idea of a wormhole. The model is conceptual. It does not yet include a complete mathematical formulation or a directly testable experimental design. Its purpose is to offer a coherent line of thought for later work.