Thursday, 4 December 2025

C THEORIES LANDSCAPE X MATLISM

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Materialism — Bullet Gist (Overview)

Core Idea

  • Consciousness is entirely physical—fully produced by the brain; all mental states reduce to physical states at fundamental levels (fields, particles).

Scientific Context

  • Dominant among scientists and many philosophers.

  • Strong support from neuroscience (brain damage, stimulation, correlations).

  • Seen as promising—though not yet complete—regarding the hard problem.

Why It Matters

  • Offers a unified, naturalistic framework for explaining consciousness.

  • Integrates with established science; potentially dissolves metaphysical mysteries.

Major Challenges

  • Persistent “explanatory gap” for subjective experience (qualia).

  • Debate over whether physical accounts can truly capture phenomenality.


Key Positions & Thinkers

Neuroscientific Support

  • John Searle (Biological Naturalism): Consciousness is fully biological.

  • Susan Greenfield: Rejects irreducible consciousness as a “get-out-of-jail-free card”; explanation must stay in brain/body terms.

  • Sean Carroll: Consciousness is an emergent way of talking about physical processes; no special mental realm.

  • Gerald Edelman: Qualia do not block a materialist theory; a theory explains experience but cannot reproduce it.

Philosophical Landscape

  • Majority of philosophers lean physicalist (~52%).

  • Chalmers’ types of materialism:

    • Type A: No epistemic gap.

    • Type B: Gap is epistemic only, not ontological.

    • Type C: Deep gap, but theoretically closable.

Conceptual Tool

  • Supervenience: No change in mental states without changes in physical states.

Introspection

  • Relation to consciousness varies by theory; central in some (e.g., neurophenomenology), irrelevant in others.


Scope & Subcategories

Materialism theories spread across 12 subdomains, including:

  1. Philosophical

  2. Neurobiological

  3. Electromagnetic field

  4. Computational / informational (non-fundamental)

  5. Homeostatic / affective

  6. Embodied / enactive

  7. Relational

  8. Representational

  9. Language-related

  10. Phylogenetic/evolutionary
    (List not exhaustive; categories overlap.)

  • Global Workspace Theory: Treated as neurobiological materialism.

  • Integrated Information Theory: Placed outside materialism (under “Information as ontology”).


General Insight

  • Many materialist theories explain how consciousness arises, but not always what consciousness fundamentally is.

  • A broad, pluralistic approach is encouraged for understanding consciousness.


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