Come può l'esperienza soggettiva e profondamente sentita in prima persona del tempo che 'scorre' essere conciliata con la geometria quadridimensionale strettamente statica ed eternamente esistente dell'universo a blocco relativistico?

block universe special relativity subjective passage of time thermodynamic arrow entropic gravity Carlo Rovelli peer-reviewed

### The Position of Mainstream Physics on Time Mainstream relativistic physics and cosmology present a stark contrast between human phenomenological experience—the continuous “flow” of time—and fundamental physical reality. In special and general relativity, the relativity of simultaneity eliminates a universal, observer-independent “now”. This leads to the **block universe** (eternalism), wherein spacetime is treated as a four-dimensional geometric manifold in which past, present, and future exist on an equal ontological footing. As Albert Einstein wrote in 1955 following the death of Michele Besso: > *“For us believing physicists, the distinction between past, present, and future is only a stubbornly persistent illusion.”* Temporal directionality is instead supplied by the **thermodynamic arrow of time** (formalized by Arthur Eddington in *The Nature of the Physical World*, 1928). Because fundamental microphysical laws are symmetric under time reversal ($T$-symmetry), the apparent forward march of time is an emergent, macroscopic property driven by the Second Law of Thermodynamics: entropy increases statistically from an extraordinarily low-entropy initial cosmological condition (the “Past Hypothesis”). ### Key Figures, Relational Time, and Modern Frontiers In pursuit of quantum gravity, researchers confront the “problem of time”—the absence of an independent time parameter in the canonical Wheeler–DeWitt equation. To address this: * **Thermal Time Hypothesis:** Carlo Rovelli and Alain Connes proposed that time is not a fundamental constituent of the universe but an emergent property generated by the statistical state of a system (Connes & Rovelli, *Classical and Quantum Gravity*, 1994). As Rovelli argues in *The Order of Time* (2018), temporal flow is relational, arising solely from coarse-grained macroscopic perspectives that obscure microscopic degrees of freedom. * **Entropic Gravity:** Theoretical models like Erik Verlinde’s entropic gravity propose that spacetime and gravitational acceleration are emergent consequences of entropy changes across information horizons. ### Epistemic Status: Consensus vs. Frontier * **Established Scientific Consensus:** The four-dimensional spacetime metric of general relativity, the relativity of simultaneity, and the thermodynamic origin of temporal asymmetry in macroscopic systems are empirically verified cornerstones of modern physics. * **Speculative / Minority Frontiers:** Loop quantum gravity, the thermal time hypothesis, and entropic gravity represent mathematically rigorous, peer-reviewed research programs, but they remain **unconfirmed theoretical hypotheses** without direct empirical validation. Practitioners live with this tension by treating time pragmatically: an indispensable parameter for local engineering and laboratory measurement, even while recognizing that at the fundamental Planck scale, physical reality may be entirely timeless.

• world-of-physics.com
• arxiv.org
• stackademic.com
• quoteinvestigator.com
• existshappens.com
• dokumen.pub
• dhruvrishishwar.com
• researchgate.net

1 source from the original research is no longer reachable

reconciling tenseless B-theory static block universe with A-theory phenomenological passage of time SEP Huw Price

In analytic philosophy and philosophical naturalism, modern physics—particularly Einsteinian relativity—strongly favors the **B-theory of time**, conceptualizing the cosmos as a static four-dimensional “block universe”. In this tenseless ontology, past, present, and future events are equally real, arrayed along relations of “earlier than” or “later than” with no ontologically privileged “now”. Yet this directly conflicts with our phenomenological reality: the **A-theoretic** intuition of dynamic temporal flow, becoming, and a fleeting present. Naturalism resolves this tension not by re-enchanting physics with dynamic flow, but by demoting passage to a cognitive and thermodynamic artifact. As detailed in the *Stanford Encyclopedia of Philosophy* (*The Experience and Perception of Time*), naturalists treat temporal passage much like secondary qualities (e.g., color): real as an internal experience, but absent from fundamental ontology. ### Key Thinkers and Texts - **Huw Price (*Time’s Arrow and Archimedes’ Point*, 1996)**: Price argues that human observers suffer from an ingrained temporal parochialism. To achieve objective clarity, inquiry must adopt an Archimedean perspective—what Price terms **“the view from nowhen”**. Price demonstrates that physicists and philosophers commit a *“double standard fallacy”* by unconsciously smuggling an asymmetric, forward-moving perspective into the time-symmetric foundations of physics. - **Causal Perspectivalism**: Price contends that the apparent direction of time and causation is an anthropocentric projection arising from our condition as situated, entropy-generating agents. ### Core Concepts & Tensions - **Block Universe (B-Theory)**: An unchanging 4D manifold containing all world-lines. - **Phenomenological Passage**: The subjective sensation that time “moves,” driven by memory accumulation, asymmetric epistemic access to the past, and prospective deliberation toward the future. - **The Living Practice**: Naturalists accept cognitive dissonance: we intellectually occupy the tenseless “view from nowhen” while navigating our evolutionary lives as tensed agents bound by local thermodynamic gradients. ### Epistemic Status The B-theoretic static block aligns with the mainstream consensus in general relativity and physical naturalism. Hypotheses positing objective temporal becoming (such as George Ellis’s *Evolving Block Universe* or presentist quantum collapse interpretations) remain speculative, minority metaphysical views contending against relativistic covariance. Naturalists consider the “flow” of time to be an epistemic and cognitive projection rather than an intrinsic feature of physical spacetime.

• arxiv.org
• stanford.edu
• stanford.edu
• stanford.edu
• cuny.edu
• stanford.edu
• rutgers.edu
• prce.hu
• google.com.br
• stanford.edu
• softouch.on.ca

neuroscience of subjective time flow temporal consciousness specious present internal clock predictive processing

### Mainstream Neuroscience and Cognitive Science on Temporal Consciousness Mainstream cognitive neuroscience, psychiatry, and psychology view subjective time not as a passive readout of an external absolute metric, but as an actively constructed, decentralized neurocomputational phenomenon. Temporal experience is organized across distinct scales—from millisecond sensorimotor binding to circadian cycles. The subjective feeling of “now”—the *specious present*—is framed as a sliding neurocomputational integration window (from tens of milliseconds to roughly 2–3 seconds) that binds asynchronous sensory inputs into unified perceptual events. #### Key Branches and Internal Tensions Neuroscience is divided primarily between two mechanistic paradigms: 1. **Dedicated Clocks vs. Intrinsic Neural Dynamics:** Classical models posited centralized pacemaker-accumulators, operationalized in the *Striatal Beat-Frequency (SBF)* model (Buhusi & Meck, 2005), where striatal spiny neurons detect coincident oscillatory rhythms from the prefrontal cortex. In contrast, growing consensus favors *intrinsic population clocks* (e.g., Dean Buonomano, Mehrdad Jazayeri), which argue that time is inherently encoded in the state-space trajectories of local neural networks without requiring dedicated pacemakers. 2. **Predictive Processing & Interoceptive Embodiment:** In predictive coding frameworks (Karl Friston, Andy Clark, Jakob Hohwy), temporal continuity is an inferred trajectory: the brain generates hierarchical temporal priors, experiencing time through the resolution of *prediction errors*. Concurrently, embodied neuroscience (A. D. “Bud” Craig, Marc Wittmann) links duration to interoception, demonstrating that the anterior insular cortex integrates bodily and affective signals across time. As Craig posited, subjective time emerges directly from the sequential processing of homeostatic states: we feel time passing via the physiological state of the body. #### Clinical Applications Psychiatrists and clinical psychologists leverage temporal metrics as functional biomarkers: * **Dopaminergic Disruption:** Dopamine depletion in Parkinson’s disease and dysregulation in ADHD warp interval timing and prospective duration judgment. * **Temporal Fragmenting:** In schizophrenia, impaired temporal binding and predictive coordination disrupt sensorimotor agency, leading to hallucinations and fragmented temporal flow. * **Depression:** Major depressive disorder correlates with insular and default mode alterations, clinically manifesting as subjective temporal deceleration or "stagnation." #### Epistemic Demarcation Mainstream neuroscience restricts its consensus to network-level dynamics, striatal-cortical loops, neurotransmitter modulation, and Bayesian predictive coding. Highly speculative proposals—such as quantum-gravitational models of consciousness (e.g., Penrose and Hameroff’s Orch-OR) or panpsychist interpretations of Integrated Information Theory (IIT)—remain outside empirical consensus and are categorized as unsupported or philosophical conjectures.

• nih.gov
• neurosity.co
• predictive-mind.net
• nih.gov
• frontiersin.org
• mit.edu
• youtube.com
• psychologytoday.com
• nih.gov
• medium.com

divine eternity timelessness block universe Boethius Aquinas presentism God outside of time classical theism

### Core Position and Classical Foundations In classical Christian theism, divine eternity is defined not as endless temporal succession (*sempiternity*), but as radical timelessness (*atemporality*). God does not endure through time; rather, God transcends temporal sequence entirely. The definitive formulation was articulated by Boethius in *The Consolation of Philosophy* (Bk. V, Pr. 6): eternity is *interminabilis vitae tota simul et perfecta possessio* (“the complete, simultaneous, and perfect possession of interminable life”). Augustine of Hippo established in *Confessions* (Bk. XI) that because God created the universe *ex nihilo*, God also created time; thus, asking what God was doing “before” creation is a category mistake. Thomas Aquinas systematized this in *Summa Theologiae* (Ia, q. 10), contrasting human time—a fleeting present (*nunc fluens*)—with God’s timeless present (*nunc stans*, the enduring “now”). Aquinas illustrated this with the metaphor of a spectator on a high watchtower who surveys an entire road at once, seeing all travelers simultaneously, whereas the travelers themselves experience the journey sequentially. ### Distinctive Concepts and Metaphysical Tensions This classical architecture intersects sharply with contemporary philosophy of time: * **The Block Universe (B-Theory / Eternalism):** Classical timelessness fits naturally with a tenseless ontology where all temporal coordinates (past, present, future) exist eternally and are co-present to God’s single act of knowledge and creation. * **Presentism (A-Theory) vs. Omniscience:** If presentism—the view that only the present moment is real—is correct, future events do not yet exist to be known or related to, forcing classical theists to explain how an atemporal God can possess comprehensive foreknowledge without temporal succession. * **ET-Simultaneity:** To bridge this gap, contemporary philosophers Eleonore Stump and Norman Kretzmann formulated *Eternal-Temporal Simultaneity* (ET-simultaneity), positing that a timeless entity and a temporal entity can be related without God entering temporal duration. ### Internal Branches and Lived Practice A major fracture exists between classical atemporalists and modern temporalists. Philosophers such as Nicholas Wolterstorff and Richard Swinburne argue that biblical theism requires a God who experiences sequence, changes relations, and responds dynamically to human emotion. William Lane Craig defends a hybrid view: God is timeless *sans* creation, but temporal *with* creation. For practitioners of classical theism, divine timelessness anchors trust in absolute divine sovereignty and immutability. Petitionary prayer is not understood as prompting a temporal reaction in God; rather, both the prayer and its providential fulfillment are grasped in a single, unconditioned, eternal divine decree. Liturgically, this manifests in the Eucharist and worship as creaturely entry into an eternal reality that does not pass away.

• stanford.edu
• planksip.org
• saet.ac.uk
• umsl.edu
• brettdhenderson.com
• asburyseminary.edu
• oup.com

kshanikavada momentary existence time passage dependent origination Pratityasamutpada Dogen Uji being-time

In Buddhist philosophy, time is not an absolute, objective container within which events happen; rather, temporality is identical with impermanence (*anitya*) and dependent origination (*pratītyasamutpāda*). Because all conditioned phenomena exist only in causal dependence upon other factors, time has no independent, substantial reality. ### Core Branches and Metaphysical Tensions * **Sarvāstivāda vs. Sautrāntika (*Kṣaṇikavāda*):** An early scholastic dispute centered on the reality of time. The Sarvāstivāda held that the intrinsic nature of phenomena (*dharmas*) persists across past, present, and future (*sarvam asti*, “all exists”). In contrast, the Sautrāntika school and later epistemologists like Dharmakīrti (in the *Pramāṇavārttika*) argued for *kṣaṇikavāda* (the doctrine of momentariness): an entity exists only for a single indivisible moment (*kṣaṇa*), dissolving the instant it appears because real existence is defined strictly by causal efficacy (*arthakriyā*). * **Madhyamaka Deconstruction:** In the *Mūlamadhyamakakārikā* (Chapter 19, *Kāla-parīkṣā* / “Investigation of Time”), Nāgārjuna exposed time as empty of intrinsic nature (*svabhāva*). Demonstrating that temporal divisions depend entirely upon one another for their definition, he reasoned: > *“If the present and the future depend on the past, then the present and the future would have existed in the past”* (MMK 19.1). If time cannot exist independently of things, and things cannot exist independently of time, both are conceptual designations devoid of inherent existence. ### Dōgen’s Lived Synthesis: Being-Time (*Uji*) Eihei Dōgen (1200–1253), the founder of Sōtō Zen, radicalized this ontology in the “Uji” (有時, *Being-Time*) fascicle of his masterwork *Shōbōgenzō* (1240). Dōgen dismantled the commonsense dichotomy between a static self and time flowing past it: > *“The reason you do not clearly understand the time-being is that you think of time only as passing… In essence, all things in the entire world are linked, and at the same time are individual moments.”* For Dōgen, time is not an external metric; being *is* time, and time *is* being. Each event is an absolute temporal presence (*nikon*, “the immediate now”) that simultaneously exhibits dynamic continuity (*kyōryaku*) throughout the universe without leaving anything behind. ### Lived Practice In silent meditation (*zazen* or *vipassanā*), practitioners directly observe the discrete arising and ceasing of sensory moments. By realizing that neither an enduring observer nor a passing river of time exists apart from immediate experience, the illusion of an abiding self (*anātman*) falls away, freeing the practitioner from anxiety over past regret and future yearning.

• universiteitleiden.nl
• engagewisdom.com
• stanford.edu
• tulkojumi.net
• princeton.edu
• stanford.edu
• wikipedia.org
• wisdomlib.org
• deepdharma.org
• thezensite.com
• villagezendo.org
• mountaincloud.org
• everydayzen.org
• tushita.info
• boeddha-beelden.com
• richmondzen.org

Martin Heidegger Being and Time phenomenological temporality vs spatialized clock time Bergson durée reelle

In secular existential phenomenology, human existence is not an entity situated inside an objective, measurable timeline; rather, human being is fundamentally constituted *by* time. This tradition sharply rejects the scientific and everyday reduction of time to "spatialized clock time"—an infinite, homogeneous sequence of interchangeable units along a linear axis—arguing that such abstraction obscures the lived realities of mortal freedom, agency, and absurdity. The groundwork was laid by Henri Bergson in *Time and Free Will* (1889) and *Matter and Memory* (1896). Bergson contrasted mathematical, spatialized time with *durée réelle* (real duration): the indivisible, qualitative, and interpenetrating flow of conscious experience. Measuring time via clocks, Bergson argued, maps qualitative duration onto external space, flattening dynamic human freedom into mechanistic determinism. In *Being and Time* (1927), Martin Heidegger radicalized this insight into fundamental ontology (§§65–82). Heidegger categorized clock time as derivative "vulgar time" (*vulgäre Zeit*): an inauthentic sequence of leveled-down "nows" (*Jetzt-Zeit*) deployed by everyday social conformity (*das Man*) to evade mortal anxiety. In contrast, Heidegger introduced primordial temporality (*ursprüngliche Zeitlichkeit*), which operates through three unified "ecstases" (ways existence stands outside itself): * **Future (*Zukunft*)**: resolutely projecting into finite possibilities and anticipating one's inevitable mortality (*Sein-zum-Tode*, or being-towards-death). * **Past / Having-been (*Gewesenheit*)**: actively assuming one's unchosen background and thrownness (*Geworfenheit*). * **Present (*Gegenwart*)**: seizing the immediate situation in an authentic "moment of vision" (*Augenblick*). A major internal tension exists between both thinkers. In *Being and Time* (§82, n. 30), Heidegger dismissed Bergson’s *durée* as still trapped within the classical Aristotelian metaphysics of presence. Whereas Bergson grounded duration in the vital, creative swelling of an ongoing present, Heidegger argued that authentic human temporality is fundamentally oriented toward the *future* through the finite horizon of death: as Heidegger stated, “Temporality is the primordial ‘outside-of-itself’ in and for itself” (*Being and Time*, §65). Practitioners live this distinction by renouncing the comforting illusion that time is an endless resource of clock ticks, instead embracing the absurd finitude of their choices within the unrepeatable present. Philosophically, these phenomenological structures are maintained not as empirical hypotheses of astrophysics or physical relativity, but as rigorous ontological descriptions of first-person lived experience.

• philosophykitchen.com
• cambridge.org
• oapen.org
• dokumen.pub
• stanford.edu
• ufmg.br
• scribd.com
• utm.edu

2 sources from the original research are no longer reachable

Kala doctrine of time cyclical cosmos Maya relative temporal flow vs eternal Brahman classical Indian philosophy

### The Position of the Tradition: Cyclical Cosmos, *Māyā*, and *Brahman* In classical Hindu philosophy, time (*kāla*) is conceived not as a linear vector heading toward a final apocalypse, but as an eternal, repeating cycle (*cakra*) governed by cosmic creation (*sṛṣṭi*), sustenance (*sthiti*), and dissolution (*pralaya*). Temporal reality unfolds in vast aeons—*kalpas* (a day of Brahmā) subdividing into four degenerating world ages (*yugas*). At the ultimate metaphysical level, traditions diverge on the ontological status of time: - **Advaita Vedānta (Non-dualism):** Formulated by thinkers like Śaṅkara, Advaita posits a two-tier ontology: empirical/relative reality (*vyāvahārika*) and ultimate reality (*pāramārthika*). *Kāla* belongs to *māyā* (the projective, illusory power of cosmic differentiation). Ultimate reality, *Brahman*, is *kālātīta*—strictly non-temporal, changeless, and eternal (*nitya*). - **Nyāya-Vaiśeṣika:** Posits *kāla* as an objectively real, omnipresent, all-pervading substance (*dravya*) serving as the instrumental condition for motion, succession, and duration. - **Bhartṛhari’s Grammar-Philosophy (*Vākyapadīya*):** Treats *kāla* in the *Kālasamuddeśa* as the autonomous, dynamic power (*śakti*) of *Śabda-Brahman* (Linguistic Absolute) that regulates the emergence and decay of all phenomena. ### Key Texts and Figures 1. ***Maitrī Upaniṣad* (6.15):** Formulates the foundational dual aspect: *"There are, assuredly, two forms of Brahman: Time and the Timeless."* (*dve vāva brahmaṇo rūpe kālaścākālaśca*). What precedes the sun is timeless and partless; what begins with the sun is time, possessing parts. 2. ***Bhagavad Gītā* (11.32):** Kṛṣṇa reveals his terrifying cosmic form as sovereign temporal destruction: *"I am Time, the great destroyer of worlds, arisen to consume the people"* (*kālo ’smi lokakṣayakṛt pravṛddho*). 3. ***Māṇḍūkya Upaniṣad* (1.1):** Identifies the syllable *Om* with past, present, future, and that which transcends three-fold time (*trikālātītam*). ### Lived Practice and Concepts Practitioners navigate this tension practically and soteriologically: - **Alignment with Cyclical Time:** Through *muhūrta-śāstra* (astrological timing) and daily observance of *sandhyā* (twilight transitional rites), ritual actions align human rhythms with cosmic order (*ṛta*). - **Liberation (*Mokṣa*):** The ultimate aim remains spiritual detachment from *saṃsāra* (the karmic wheel of birth, death, and rebirth across temporal cycles) to realize identity with the timeless Self (*Ātman*/*Brahman*). *(Epistemic note: While modern popular commentators often draw analogies between Hindu cyclical aeons and relativistic physics or cyclic multiverses, academic scholarship treats these as speculative comparative parallels rather than evidence that ancient metaphysics anticipates empirical cosmology.)*

• iskconeducationalservices.org
• blogspot.com
• u-tokyo.ac.jp
• hindumirror.com
• hinduamerican.org
• sanatanhindudharma.org
• drsurabhisolanki.com
• youtube.com
• reddit.com
• reflections.live