Future-generating variants of the many-worlds interpretation (MWI) of quantum mechanics assume that new worlds are created through quantum measurement, observation, or conscious choice. While such interpretations preserve unitary quantum evolution, they suffer from persistent conceptual difficulties, including uncontrolled ontological proliferation, ambiguity of personal identity across branches, and the absence of a principled explanation for why observers retain memories of the past but never of the future. This paper proposes the Fixed Worldline Anthropic Model (FWAM), a non-generating framework in which all physically admissible worldlines exist as a fixed global structure extending from an initial boundary a to a terminal boundary b. Observation does not generate new worlds; instead, each conscious observer experiences a single worldline selected from this pre-existing ensemble. Within FWAM, the epistemic inaccessibility of the future arises not from its non-existence, but from the absence of future experiential states within the present informational structure of consciousness. Observer identity is defined by informational continuity along a worldline, and identity does not persist when such continuity is broken. FWAM provides a unified explanation for memory asymmetry, temporal directionality, and the absence of pre-universe recollection, while avoiding the ontological inflation inherent in future-generating many-worlds models.
楓彩 辻田 (Mon,) studied this question.