The Name
The name Differance Lab comes from Jacques Derrida’s coinage différance. Meaning emerges from differences with other terms; final meaning is forever deferred along chains of explanation. The substance of knowledge could be argued to be woven into the very motion of différance. This site attempts to carry that implication beyond the history of ideas into the practical sites of design, measurement, and record-keeping.
The Underlying Framework
Most articles on this site share a common substrate built from three interlocking concepts.
- Mediation — Tools and media stand between purpose and action; they shape what is visible, what is doable, and what is easy to think.
- Différance — Purpose and meaning are not given in advance; they emerge retroactively as work proceeds and relations with other things come into view.
- Asymmetry of Verification and Validation (V&V) — Verification looks for differences between adjacent stages and lends itself to mechanisation. Validation asks, of the finished work, “what was actually wanted?” — it can only be fixed retroactively.
These three are articulated, in working-practitioner language, in the foundational article Relatively, Not Deterministically, which functions as the entry point that any article on the site — whatever its category — can eventually be read back through.
Structure of the Site ── Two Axes
This site presents an integrated reading across philosophy, physics, and social systems, articulating an intellectual horizon that crosses departmental boundaries. It consists of a single theoretical framework together with articles that tailor it to concrete sites of practice in each field, and it can be organised along two broad axes.
Body of Knowledge ── the layer of axioms and concepts
The stable core that keeps adjacent layers consistent.
– Formal philosophy ── mediation / différance / the V&V asymmetry, the preprint series, the foundational article Relatively, Not Deterministically
– Physics (the layer of practical wisdom) ── symmetry breaking, emergence. The discipline with the longest track record of axioms colliding with reality, and the principal source of this site’s analogies
Engineering ── the layer of tailoring
Articles that bring the body of knowledge down to specific contexts.
– Systems ── Intellectual production · Tool design · PC environment
– Quantitative investing ── articles that treat financial-machine-learning models (López de Prado’s AFML and others) together with the implementation process
– Governance ── structural analyses of institutions and organisations (the line of preprint paper 2)
Other shelves
– Reading notes ── source material for the body of knowledge
– Arts ── instrument theory, performance philosophy, social history of music
These are not a loose assortment of independent themes. They are interconnected through a shared substrate ── mediation ── which can be argued to be the structural common ground. The existing WordPress categories (Philosophy / Physics / Investing / Arts / Systems / Reading) remain as a subject index over this structure.
Vantage
The articles on this site are written largely from a vantage informed by physics, combined with an engineering-pragmatist stance — meaning is fixed operationally, and terms are used only within the range over which they can be verified. The lineage runs through Bridgman’s operationalism, Peirce’s pragmatism, and Quine’s coherentism.
In practical terms, this leads to certain methodological choices: working with sums and finite differences rather than continuous calculus, bracketing measure-theoretic rigour where it is not load-bearing, and prioritising “tools that function on the ground” over formal completeness. These are not concessions; they are deliberate, principled engineering choices.
Where the writer’s vantage shapes a reading, the body of the article surfaces this explicitly rather than presenting the interpretation as neutral commentary.
Citations and Primary Sources
Every article carries footnoted citations to primary sources where possible, and ends with a References section. The disposition is one of demonstration (立証) ── argument grounded in evidence ── rather than rhetorical persuasion (説得).
Affiliate Disclosure
Articles in the Reading category include book links as a participant in the Amazon Associates programme. Purchases made through these links may result in a referral fee paid to this site. The selection and evaluation of books are not influenced by the presence or absence of referral fees.
Languages
Articles on this site are published primarily in Japanese, with selected pieces translated into English for readers arriving from international audiences. The Japanese version of this site is the canonical home of the editorial project; English versions exist as a parallel companion stream. Cross-language navigation is available via the language switcher in the header.