Duration and Simultaneity
Bergson's 1922 engagement with Einstein's special relativity — a defense of durée against the spatialised time of physics
Tradition: French process philosophy / philosophy of physics
Special relativity's "time" is a measurement-coordinate, not the durée of lived experience — the two are not commensurable
Duration and Simultaneity was Bergson's extended response to Einstein's special relativity, occasioned by the 1922 Société française de philosophie debate at which Einstein famously replied "il n'y a donc pas un temps des philosophes" — there is no philosophers' time, only the physicists'. Bergson's thesis: relativistic "time" is a measurement-coordinate constructed by light-signalling between reference-frames; it is a mathematical artefact, not a contender against the single universal durée of lived experience. The famous twin paradox is, on Bergson's reading, a calculation paradox internal to the symbolic apparatus, not a real claim about lived time — once the symmetry of the frames is restored, both twins age the same. The book damaged Bergson's reputation severely: physicists treated it as misunderstanding of relativity (the asymmetry of the twin paradox is real, not symbolic), and Bergson allowed it to go out of print after 1931. Reassessed by some late-twentieth-century historians of philosophy of science (Canales, Gunter) as a deeper engagement than the dismissive reception suggested, though the consensus that Bergson misread the physics still holds.
Author
Editions cited
- Durée et Simultanéité: à propos de la théorie d'Einstein (Paris: Alcan, 1922; revised 2nd edn 1923; suppressed from collected works after 1931 at Bergson's direction). English trans. Leon Jacobson, Duration and Simultaneity (Bobbs-Merrill, 1965; reissued Clinamen, 1999)
School Embodiments
The book extends the durée framework of Creative Evolution into a direct confrontation with physics: lived time is irreducible to the spatialised time of measurement.
"The time of physics is a fourth dimension of spatial extension. Real time, durée, has nothing of space about it." (Duration and Simultaneity, ch. 3)
The phenomenological method — return to immediate intuition of lived time — is deployed against the technical-mathematical reconstruction of time in relativity.
"There is one real and lived time. The plural times of relativity are pictures of time, not time itself." (Duration and Simultaneity, ch. 5)
Bergson distinguishes real time from its measurement-representation — a critical-realist move that separates the underlying object from the techniques used to measure it.
"To confuse time with the measurement of time is to confuse a thing with its symbol." (Duration and Simultaneity, ch. 4)
The argument that simultaneity at a distance is a construction of the observer aligns Bergson with a broadly idealist epistemology — the framework is partly constituted by the inquirer.
"There is no simultaneity except for an observer. To say that two events are simultaneous in themselves is meaningless." (Duration and Simultaneity, ch. 3)
The book treats the Einstein theory as a mathematical structure whose physical content must be philosophically interpreted; it is rationalist in its confidence that the philosopher can reason from formalism to ontology.
"The relativistic equations are perfectly consistent; the question is what they describe." (Duration and Simultaneity, ch. 2)
Despite the disagreement with Einstein, Bergson accepts the empirical findings of relativity; the dispute is about their philosophical interpretation, not their truth.
"We do not dispute the experimental results of relativity; we dispute the philosophical reading given to them." (Duration and Simultaneity, Preface)
Internal Tensions
Bergson misread the twin paradox: in standard relativity the asymmetry is real (one twin accelerates), not symbolic, and the traveling twin ages less in any frame. Bergson's removal of the book from his collected works (after 1931) tacitly acknowledged the difficulty. Late twentieth-century rehabilitations (Canales, The Physicist and the Philosopher, 2015) argue the philosophical issues — the relation between measurement and reality, the status of simultaneity, the question of whose time is privileged — remain live, even if Bergson got the physics wrong.
I. Time
The decisive dimension: against the multiplicity of relativistic times, Bergson insists on a single universal durée that grounds the very possibility of measurement.
Attributes
II. Space
Space as the medium in which physical measurement operates — useful for the physicist, misleading when extended to lived time.
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III. Matter
Material reality (the Michelson-Morley experiment, the clocks of the twin paradox) is what relativity correctly describes — but the description is not the reality.
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IV. Observer
The single universal observer of lived durée vs. the multiplicity of relativistic reference frames — Bergson insists the latter cannot replace the former.
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V. Energy
Standard physical energy is conserved; the dispute is about the framework, not the empirical findings.
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VI. Information
Light signals as the information that synchronises clocks — they constitute the measurement-coordinate, not lived time.
Attributes
Personas with the nearest attribute fingerprint
Historical figures whose own classification on the same six-dimensional grid lands closest to this work's. Computed by attribute-agreement on coordinates both address.
Computed school proximity
The work's attribute fingerprint scored against all schools using the same quiz scorer. Useful as a sanity check on the hand-curated embodiments above.
How Duration and Simultaneity resolves each dilemma
48 resolved positions across 4 dimensions, including 3 distinctive where the majority of schools go the other way · 9 unaligned.
Each dimension is sorted so minority positions come first. Mainstream positions are folded into an expandable list.
Time · 9 dilemmas · 3 distinctive
Persistence, the future, and the direction of becoming.