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Persona #109

David Deutsch

1953–present
British physicist, founding figure in quantum computation, defender of the Everettian many-worlds interpretation

Other universes are not metaphor — quantum mechanics, taken literally, requires the multiverse

Attribute Fingerprint

Rows where personas disagree are highlighted in gold. The full ontology grid (32 attributes) is shown.

Attribute David Deutsch
Time · Extent Infinite
Time · Ontological Status Substantival
Time · Grain Continuous
Time · Freedom Deterministic
Time · Traversability Branching
Time · Dimensionality One
Time · Direction Multi-directional
Space · Extent Infinite
Space · Ontological Status Substantival
Space · Curvature Curved
Space · Dimensionality Three
Space · Locality Non-local
Matter · Extent Infinite
Matter · Ontological Status Substantival
Matter · Conservation Conserved
Matter · Dimensionality Three
Matter · Locality Non-local
Observer · Time Instance Multiple
Observer · Space Instance Multiple
Observer · Knowledge Extent Immediate
Observer · Knowledge Retainment Total
Observer · Physicality Embodied
Observer · Agency Active
Observer · Number Plural
Observer · Metaphysical Agency None
Observer · Moral Authority Reason
Observer · Theological Method N/A
Energy · Extent Infinite
Energy · Ontological Status Substantival
Energy · Conservation Conserved
Energy · Dispersibility Irreversible
Information · Ontological Status Substantival
Information · Cosmic Conservation Conserved
Information · Personal Conservation Non-conserved
Information · Granularity Discrete

Dimension-by-Dimension Evidence

What each persona's writings reveal about their stance on each of the six dimensions.

Time

David Deutsch

Branching — every quantum event splits the wavefunction; multiple histories are equally real.

Space

David Deutsch

Non-local, curved (GR-compatible). The multiverse is the totality of branches.

Matter

David Deutsch

Substantival across the multiverse; conserved by quantum unitarity.

Observer

David Deutsch

Multiple — every observer has counterparts in branched worlds.

Energy

David Deutsch

Substantival, conserved.

Information

David Deutsch

Conserved by quantum unitarity at the cosmic scale.

Internal Tensions

Where each persona's working synthesis strains against itself.

David Deutsch

The Everett interpretation's "many worlds" status remains contested among physicists and philosophers of physics; Bohmian mechanics, GRW collapse theories, and QBism are live alternatives.