Case study · Personal initiative · 2026 · MVP

I didn’t want moreoutput from AI.I wanted better decisions.

The Design Intelligence Framework is a knowledge and reasoning layer that keeps the evidence, assumptions and trade-offs behind design decisions explicit. It’s how I bring AI into design work: I built it, tried it on a real brief, and checked what actually helped.

Project
Personal initiative
Status
MVP, simplifying before a pilot
Built with
Claude and ChatGPT
My role
Problem framing, architecture, content and quality bar
106

documents across seven layers

20

real decisions turned into reasoning cases

3

gaps it caught in a real brief

3

behaviours only users could show

01 · The problem

AI answers fast. Teams need to know why.

Teams already have research, principles and benchmarks. What gets lost is the reasoning that connects them, and AI without that context gives advice that’s right in theory and wrong for the product.

What AI gave meWhat a product team needs
Generic best practiceRight in theory, blind to the business model.
⇄
Right for this productIts users, goals and constraints.
Confident answersEvidence and guesses in the same voice.
⇄
Evidence and assumptions apartAnd how sure we are.
A new answer every timeWhy an option was rejected is never written down.
⇄
Reasoning that lastsDecisions others can follow and challenge.

So I built what the model reasons with, not more prompts.

02 · The build

Seven layers, one job each

I designed the architecture and the quality bar; AI helped me write, compare and check consistency. The highlighted layers turned out to carry most of the value.

ManifestoWhy it exists
Decision quality, not document volume.1
FoundationHow it behaves
Classify the request, gather context, know when to ask.12
FrameworksMethod selection
JTBD, RICE, HEART and others, chosen after the problem.10
DomainsExpertise
Research, UX, UI, Product and Review.46
Decision casesReasoning memory
Real decisions, stripped of company detail.20
TemplatesConsistency
Standard outputs, without replacing the thinking.10
Gold standardsQuality bar
Evidence hierarchy and decision-quality checks.5

One source of truthEarly on, three documents described the same process slightly differently, so the model had several “correct” orders at once. I split them so each rule lives in one place.

03 · The trial

I tried it on a real brief

The fare bundle brief from Pegasus. I ran it after the usability test, so I could check what the framework saw against what users actually did. See the bundle case →

1What I gave it

Brief · Pegasus · Oct 2025“To compare bundles and sell more of them: cards or a matrix? Travellers don’t understand the services in each bundle. We’re not sure a matrix would be clear.”
My requestReview this brief before we start.

2What it gave back

The real decisionNot cards or matrix, but which layout helps travellers pick the bundle that fits their need.
Missing“Sell more” is a business outcome. Define a correct choice before comparing layouts.
RiskSales and the right choice can pull apart; a “recommended” label mustn’t become a dark pattern.

Used: the short core rules and one brief-review file. Readiness: needs clarification.

3What only the test showed

  • ~70% misclicks on both layouts
  • Info icons almost nobody opened
  • 4.9/5 confidence on the matrix, with half the choices wrong
04 · What happens next

Make it work, then make it better

The trial showed the short core did most of the work. Before adding anything, I measure.

1Define “working”

Ten real requests: brief reviews, design reviews, decisions, research plans.

2Baseline

Run them with and without the framework; score against the gold standards.

3Simplify

Keep the core and the decision cases; merge each domain into one file.

4Run again

Same ten requests. Quality must hold with less.

5Pilot

Only then, a real project at work.

Read the storyWhy and how I built it, in Turkish: On Medium ↗

05 · What I’m taking forward

“AI helps me ask better questions early. Users still answer them.”

01

Bring AI in before design starts

It’s most useful on the brief: naming the real decision, the missing measure, the risk.

02

Users still show the behaviour

No model predicted the misclicks or the overconfidence. The test did.

03

Prove a tool before growing it

I spent too long optimising a system I hadn’t proven. Now I measure first, and keep less in one place.

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