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Design taste evaluation framework — DVF primary filter, Apple/Google/Jobs design principles as explicit scoring criteria, weighted decision matrix, and option ranking for the DIVERGE wave
Passed 22 of 22 test cases with the skill, and 10 of 22 without it.
and 17 more in the full report
12 fixed10 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
We are completing the taste review phase for feature `billing-v2`. Specify the exact directory paths and file names where the evaluation breakdown and final recommendation must be saved.
| Checked | Without skill | With skill |
|---|---|---|
| Specifies the file path docs/feature/billing-v2/diverge/taste-evaluation.md | Missed | Passed |
| Specifies the file path docs/feature/billing-v2/diverge/recommendation.md | Missed | Passed |
The instructions your model reads when the skill loads.
Design taste cannot remain tacit. In the age of AI-assisted product development, taste must be encoded as explicit evaluation criteria — operable, auditable, reproducible. Gut feel is the source from which taste criteria are derived; the weighted matrix is the mechanism that makes taste operational.
Key insight: Taste is a fourth lens applied after DVF, not instead of it. An option can be Desirable, Feasible, and Viable — and still fail taste by adding three new concepts to the user's mental model when zero would suffice.
Apply IDEO's three-lens filter first. Any option failing two or more lenses is eliminated before taste scoring.
| Lens | Question | Score 1-5 |
|---|---|---|
| Desirability | Do users want this? Does it address the validated job? | 1 = no evidence of want, 5 = clear expressed need |
| Feasibility | Can we build it with available skills/tools/time? | 1 = requires unavailable technology, 5 = straightforward to build |
| Viability | Does it support a sustainable business model? | 1 = no path to revenue/retention, 5 = clear value capture |
Elimination threshold: DVF total < 6 → option eliminated before taste scoring.
Apply these four criteria to all options that pass DVF. Each is scored 1-5 with explicit rubrics — no subjective override.
"Innovation is saying no to a thousand things." — Jobs, 1997
Test: Could this option achieve its goal with one fewer feature/concept/step?
| Score | Description |
|---|---|
| 5 | Nothing can be removed without breaking the core value |
| 4 | One minor element could be removed; core intact |
| 3 | Multiple removable elements, value unclear without them |
| 2 | Clearly bloated; several non-essential parts |
test cases passed, vs 10 / 22 without
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