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mit/thesis/dual/sdm two candidates

how we can use co-design to create a participatory system of institutional decision-making

potential structure

Thesis: Participatory Decision-Making Using Co-Design and Partial Order

Claim: Many complex system design problems involve stakeholders with divergent or incommensurable preferences; instead of aiming for total consensus, participatory processes can yield partially ordered sets of solutions that reflect trade-offs transparently and support informed co-evolution.

Gap

Most participatory frameworks focus on facilitation and dialogue, but lack formal structures for comparing competing preferences or compositions of solutions.

Optimization frameworks assume total orders; real decisions often involve incomplete, evolving, or non-comparable preferences.

Existing design processes rarely show participants the structured space of possibilities or how solutions emerge from trade-offs.

Hypothesis

Co-design processes can be formally modeled using partial orders (posets), revealing where preferences align, conflict, or compose.

This model enables more transparent, explainable, and iterative participatory decision-making.

Theoretical Foundations

Category theory: posets as thin categories, functors as structured preference mappings

Decision theory: partial orders, Pareto frontiers, multi-objective trade-off spaces

Co-design (Zardini lab, Oikos, Urban Co-Design): participation as structured iteration, not consensus-seeking

Ethics of participation: transparency and agency arise from structured intelligibility, not necessarily from agreement

Method Overview

Model co-design outcomes as elements in a partially ordered solution space

Define functors that map stakeholder preference structures into solution-space rankings

Use case study data from participatory workshops (e.g., Oikos, public space planning) to extract preference structures

Build tooling or visualizations to show emerging posets of design options

Analyze how changes in stakeholder framing affect the partial order over time

Expected Contributions

A formal framework for co-design as participatory ordering, not forced convergence

Practical tools for participatory planning that reveal structure without reducing complexity

A generalizable model of participatory reasoning as partial epistemic consensus

knowledge can be represented as relationships between categories of concepts

potential structure

Thesis: Understanding Learning as Epistemological Composition and Abstraction

Claim: Learning is not just information accumulation but a structured, layered process of composing knowledge fragments and abstracting over them; category theory offers a formal language for modeling these nested, compositional epistemic transformations.

Gap

Most learning theories are either cognitive (mental models) or statistical (Bayesian update), and rarely formalize how knowledge transforms across abstraction layers.

Few frameworks exist for representing recursive belief structures, cross-domain analogies, or meta-level learning (learning how to learn).

There’s little alignment between formal epistemology and applied system learning (design, AI, planning).

Hypothesis

Learning can be modeled as composition over structured belief morphisms, with abstraction corresponding to movement up layers of epistemic categories.

This structure enables analysis of learning loops, reflection, generalization, and design insight.

Theoretical Foundations

Category theory: functors, fibrations, 2-categories, composition, pullbacks, abstraction as higher morphisms

Epistemology: nested belief, revision, speculative reasoning, conceptual change

Learning theory: curriculum design, analogical transfer, reflection

System design: modular abstraction, interface design, learning-by-design

Method Overview

Define core learning operations (composition, abstraction, analogy) as categorical structures

Model examples of real-world learning trajectories (e.g. concept maps, planning sequences, reflective practice) using these structures

Use visual and algebraic tools to reveal where epistemic composition succeeds or breaks

Optionally build tooling to track or simulate epistemic composition (e.g. a learning graph based on Logseq or Omnicat-style representation)

Apply the model to system design or planning problems to demonstrate usefulness

Expected Contributions

A formal model of learning as epistemic composition across abstraction layers

Bridging epistemology, design, and cognitive systems

A novel theoretical foundation for modular, reflective, and cross-domain learning

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Thesis: Urban Quality in the Experiential City

Claim: The most livable cities balance efficiency (structured access) and serendipity (unplanned, meaningful experiences), especially in a post-COVID context where work decentralizes and everyday experience becomes central to urban value.

Gap

Most urban design frameworks (e.g. 15-minute city) optimize for efficiency but neglect serendipity.

There is no operationalized, data-driven way to measure or map serendipity at scale.

The emerging “experiential city” demands new metrics that account for pleasure, discovery, ambiguity, and play.

Hypothesis

Urban well-being emerges from a dynamic balance between efficiency and serendipity.

Cities over-optimized for proximity and predictability lose the social and creative value that comes from structured unpredictability.

Theoretical Foundations

Jon Kleinberg: navigable systems require a balance of local links (efficiency) and long-range randomness (serendipity).

Jane Jacobs, William Whyte: complexity and spontaneity as civic virtues.

Urban morphologies (CNU, space syntax): form constrains or enables experiential sequences.

Post-COVID shift: city as platform for culture, leisure, learning—not just work.

Place typologies: importance of 1.5 and 2.5 places as zones of porousness and hybrid use.

Method Overview

Define and operationalize two axes of urban quality:

Efficiency: proximity to amenities, transit coverage, walkability (using OSM, GTFS, Walk Score, etc.)

Serendipity: POI diversity, semantic adjacency, ambiguous use, temporal variance, street network entropy

Use publicly available or purchasable datasets:

OpenStreetMap

SafeGraph / Veraset / Cuebiq

Yelp, Foursquare, Google Places

GTFS feeds and transit APIs

Facebook or Eventbrite event data

Map and score neighborhoods on both axes

Identify spatial typologies and performance quadrants:

High-efficiency / high-serendipity

High-efficiency / low-serendipity

Low-efficiency / high-serendipity

Low-low zones

Analyze across scales: block, neighborhood, district

Interpret role of 1.5 / 2.5 places in enabling rich experience

Expected Contributions

A reproducible framework to measure and compare urban serendipity

A new way to conceptualize and design for quality in the experiential city

Grounded recommendations for planners to support both accessibility and spontaneous urban joy