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Publish the Obsidian vault's Knowledge folder as /knowledge (881 notes, 67 folders), with a Knowledge item in the nav and footer. - scripts/import_knowledge.py regenerates data/knowledge from the vault: slugged paths, folder notes as index pages, wikilinks resolved to site links (or plain text), callouts, highlights, and Dataview tables rendered statically. Personal notes are withheld via an exclusion list plus a privacy guard. - tuftecms/core/knowledge.py builds a concept index from note titles and aliases. First mentions on ordinary pages link to their Knowledge note (capped, never in headings, code, links, or sidenotes); Knowledge pages list related notes and where they're mentioned across the site; other pages get a Related Knowledge block. - Knowledge URLs join sitemap.xml (so the sweep test covers them), never displace existing legacy slugs, list alphabetically, and mermaid diagrams render client-side only on pages that have them.
208 lines
9.1 KiB
Markdown
208 lines
9.1 KiB
Markdown
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source: obsidian-knowledge
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# Idealism
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**Core Thesis**: Reality is fundamentally mental, experiential, or spiritual rather than material
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---
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## Overview
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Idealism is the philosophical view that reality is fundamentally mental, mind-dependent, or immaterial. Rather than matter being primary with consciousness emerging from it, idealists argue that mind or consciousness is primary, and the material world is either dependent on mind or is itself mental in nature. This contrasts sharply with [materialism](/knowledge/philosophy/materialism) and relates to questions of [consciousness in AI](/knowledge/ai/ai-sentience).
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---
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## Major Forms of Idealism
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### Subjective Idealism (Immaterialism)
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**George Berkeley (1685-1753):** "To be is to be perceived" (*esse est percipi*). Material objects exist only as perceptions -- no matter independent of mind. God's perception sustains reality. We only ever experience perceptions, cannot prove matter exists beyond them, and positing matter is unnecessary (Occam's Razor). Objects are collections of ideas.
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### Objective Idealism
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**G.W.F. Hegel (1770-1831)** proposed that Absolute Spirit (Geist) is the fundamental reality, unfolding dialectically through history as Spirit knowing itself -- a synthesis of subject and object. Unlike subjective idealism, this posits a mind-independent ideal reality not dependent on individual minds, influenced by Platonic forms and pointing toward universal consciousness.
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### Transcendental Idealism
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**Immanuel Kant (1724-1804)** argued that things-in-themselves (noumena) are unknowable; we know only appearances (phenomena). The mind structures experience, and space and time are mental frameworks. His key insight: the mind actively constructs experience through a priori categories of understanding. This was the Copernican Revolution in philosophy -- a synthesis of rationalism and empiricism.
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### Platonic Idealism
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**Plato (427-347 BCE)** held that the Forms are ultimate reality. The material world is shadow and copy; ideal perfect templates are what truly exist; knowledge is the remembering of Forms. In the Allegory of the Cave, prisoners see only shadows and mistake them for reality. The philosopher escapes to see the Forms, then returns to enlighten others.
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---
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## Arguments for Idealism
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### The Argument from Perception
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We directly know only our experiences. The material world is inferred from them. Why posit matter beyond experience? It is simpler to say reality is experiential.
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### The Problem of Consciousness
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[Materialism](/knowledge/philosophy/materialism) struggles to explain consciousness. How does matter produce experience? Mind-from-matter is more mysterious than matter-from-mind. Making consciousness fundamental avoids the hard problem entirely.
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### The Unity of Experience
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Experience is irreducibly unified, but material parts do not explain that unity. Consciousness is naturally unified -- idealism better explains the phenomenology.
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### Quantum Mechanics Interpretation
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Measurement affects quantum states. Does consciousness collapse the wave function? If reality depends on observation, some interpretations of quantum mechanics support idealism.
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---
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## Arguments Against Idealism
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### Common Sense Objection
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Idealism seems obviously false. Objects exist when unobserved. Dr. Johnson kicked a rock and declared the matter settled. Counter-intuitive, to say the least.
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### Scientific Success of Materialism
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[Materialist science](/knowledge/philosophy/materialism) is highly successful. Physical explanations work. No need for mental ontology. A pragmatic argument, but a strong one.
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### Problem of Other Minds
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How do other minds exist? The danger of solipsism looms. Berkeley invokes God (ad hoc?), and intersubjective agreement goes unexplained.
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### Causation Problems
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How does one idea cause another? Material causation seems clearer. Mental causation remains mysterious, and the explanatory power of idealism is limited.
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---
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## Contemporary Idealism
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### Analytic Idealism
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**Bernardo Kastrup** argues that consciousness is fundamental -- the universe is consciousness experiencing itself. Individuals are dissociated alters of a universal mind, with mental illness as a metaphor for individuation. This directly addresses the [AI consciousness](/knowledge/ai/ai-sentience) question.
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### Cosmopsychism
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The universe itself is conscious, and we are parts of a cosmic mind. This panpsychism variant addresses the combination problem by starting from the whole rather than the parts.
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### Digital Idealism
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Reality as information or computation. Connections to the simulation hypothesis and digital physics. Relevant to AI intelligence debates.
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---
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## Idealism and Eastern Philosophy
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### Yogacara Buddhism (Mind-Only)
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"Consciousness-only" (vijnapti-matra). External objects are projections of mind, arising from store consciousness (alaya-vijnana). The parallels with Western idealism are striking.
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### Advaita Vedanta
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Brahman (consciousness) is the sole reality. The material world is Maya (illusion). Atman (self) equals Brahman. Non-dual awareness.
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### Connections to [Hindu Philosophy](/knowledge/spirituality/henotheism)
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Divine consciousness is primary, the material world is play (lila). [Shiva](/knowledge/mythology/hindu-mythology/shiva) as consciousness, [Vishnu](/knowledge/mythology/hindu-mythology/vishnu) as preserver of illusion.
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---
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## Jungian Connections
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### The Collective Unconscious
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Objective psychic reality, not reducible to matter. A universal mind-like substrate -- the archetypal realm.
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### Synchronicity
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[Acausal meaningful connection](/knowledge/psychology/jungian/synchronicity) between mind and matter at the psychoid level. An idealist interpretation is possible.
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### The Self
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[Archetypal wholeness](/knowledge/psychology/jungian/the-self) -- the transpersonal dimension beyond ego, participation in cosmic mind.
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---
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## Implications for AI and Technology
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### AI Consciousness
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If idealism is true, can AI be conscious? It depends on the idealist variant. The [sentience](/knowledge/ai/ai-sentience) question is reframed: is information processing itself mental?
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### Simulation Hypothesis
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Reality as computation. The idealist interpretation of the simulation hypothesis: the Matrix scenario as virtual reality metaphysics.
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### Mind Uploading
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If mind is primary, what exactly is uploaded? Substrate independence supports uploading, but idealism might require a specific mental substance. Identity questions abound.
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---
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## Practical Implications
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### Ethics
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If all beings participate in universal mind, harm to others is self-harm. Compassion follows naturally. Environmental ethics gains force when nature is conscious.
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### Meaning and Purpose
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If mind is fundamental, existence is [not absurd](/knowledge/philosophy/existentialism). Cosmic consciousness has purpose; individual meaning participates in universal mind. This contrasts sharply with materialist nihilism.
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### Spiritual Practice
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Meditation becomes direct access to reality, not escape from it. Mystical experience is epistemically valid. Contemplative traditions are vindicated.
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---
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## Modern Debates
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### Idealism vs Materialism
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The ancient debate continues. [Materialism](/knowledge/philosophy/materialism) dominates in science, but idealism is reviving in consciousness studies, where the hard problem of consciousness remains central.
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### Idealism vs Dualism
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[Dualism](/knowledge/philosophy/dualism) says both mind and matter are fundamental. Idealism says only mind is. This avoids the interaction problem and offers a simpler ontology (monism).
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### Neutral Monism Alternative
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Neither mind nor matter is fundamental -- a neutral substance underlies both. Russell and James proposed this compromise position.
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---
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## Related
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- [Materialism](/knowledge/philosophy/materialism) — Opposing view
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- [Dualism](/knowledge/philosophy/dualism) — Alternative monism
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- [Phenomenology](/knowledge/philosophy/phenomenology) — Study of experience
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- [AI Sentience](/knowledge/ai/ai-sentience) — Consciousness nature
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- Collective Unconscious — Universal psychic reality
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- [Henotheism](/knowledge/spirituality/henotheism) — Divine mind traditions
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- [Existentialism](/knowledge/philosophy/existentialism) — Meaning in idealist vs materialist worlds
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- [Consciousness](/knowledge/ai/consciousness) — Mind as fundamental
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- [Vedanta](/knowledge/spirituality/vedanta) — Brahman as sole reality
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- [Emergence](/knowledge/ai/emergence) — How properties arise from substrate
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---
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## Key Figures
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- **Plato** (427-347 BCE) - Forms theory
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- **George Berkeley** (1685-1753) - Subjective idealism
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- **Immanuel Kant** (1724-1804) - Transcendental idealism
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- **G.W.F. Hegel** (1770-1831) - Absolute idealism
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- **Arthur Schopenhauer** (1788-1860) - Will as fundamental
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- **Josiah Royce** (1855-1916) - American idealism
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- **Bernardo Kastrup** (1974-) - Contemporary analytic idealism
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---
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## Further Reading
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- "Three Dialogues" - George Berkeley
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- "Critique of Pure Reason" - Immanuel Kant
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- "The Phenomenology of Spirit" - G.W.F. Hegel
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- "Why Materialism Is Baloney" - Bernardo Kastrup (2014)
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- "The Idea of the World" - Bernardo Kastrup (2019)
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- "The Republic" (Cave Allegory) - Plato
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