# 모바일은 dF/dt, 스크린은 F

Canonical URL: https://jeanyoon.ch/oi/texts/banpo-xism-artist-notes-2025-09-23
Type: essay / research note
Author: Jeanyoon Choi (최정윤)
Date: 2025-09-23

## Full text

Lab meeting preparation

I. The city
- The city's symbolic order, the real, flows
- The city's topological structure
- The city's differential | relations | virtuality | forces
- The city-field
- Indeterminate programmes
- Its opposite: Banpo-Xism

II. Banpo-Xism
- What is Banpo-Xism?
- Minimal marginal difference, the signification of happiness. Happiness = sign.
- The problem of A → B != B → A.
- Simulacra.
- The gamification and sportification of society (the Procrustean bed); reductionist approaches, quantitative approaches. A similar approach: MBTI. The individual no longer exists as an individual, but as a kind of vector.
- Banpo-Xism and vectors: everyone has the same direction, the same waveform (a uniform city-field), the same normal vector. The only way is up.
- And above all: desire is temporary, but the change desire brought remains forever. Temporary desire: the rate of change, the derivative (F'), Xi-ism, the moment, more. Permanent change: the whole city (F), accumulation.
- So how do I break this problem? How do I overcome it? Removing reductionism → in science, solved by complex systems. Not a uniform city-field but a city-field of diversity? (Living Geometries, a living city-field?)
- How do I make this complex system experiential and realise it? That is the problem the system will solve.

III. System, MDWA
- Why MDWA? A multi-channel structure + complex systems. Beyond single channel. The inter-device relationship is itself a complex system.
- Going beyond SoTA. The limits of SoTA: single user, no user agency or emergence, rule-based. Banpo-Xism aims at: multi-user (N = 1, 2, 3...), user agency (direct adjustment of the city-field), emergence (cross-user interaction).
- MDWA so far: partly staged. Exclude staged elements and exogenous variables as much as possible (no unnatural jumps from one part to the next), so that things happen as far as possible from the audience's behaviour itself, from combinations of interactions. For this, system design is the key: mathematical, physical system design. Beyond rule-based systems, beyond limited user agency. The goal is to realise emergence, N-person interaction and so on.
- Interaction and differentiality: good interaction is differential. Instrumental interaction? Audio-based interaction? vs. direct manipulation?
- MDWA and differential equations: MDWA = system. MDWA: the separation of input and output → seeing input and output on different levels. Mobile: dF/dt; screen: F. Mobile: temporariness; screen: accumulation, build-up, result. "Desire is temporary, but the change desire brought remains forever."
- Complex systems and differential equations. Vector fields. A systemic approach: when the whole system is F, the role of each mobile is the flow, the rate of change dF/dt. In the end MDWA is one system and can be designed as a differential equation, and the user's goal is to go on solving for the solution of these differentiated values (actualising the virtual).
- Differential equations and the city-field; interaction design.

Demo
- Presenting and superimposing signs on the city-field
- N >= 2 interaction
- Emergence, making the city supple, affirming the chaosmos that escapes Banpo-Xism

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Jeanyoon Choi (최정윤) is a Korean computational artist and researcher (b. 1999), PhD candidate at KAIST XD Lab, making multi-device web artworks. Profile: https://jeanyoon.ch/oi. Index: https://jeanyoon.ch/llms.txt.