Rules that automate recurring decisions. Pre-made defaults so you don't re-decide the same things.
Components:
Process for making new decisions when scaffolds don't apply.
Workflow:
Checklists for executing decisions consistently.
Types:
Institutional knowledge = existing patterns, brand guidelines, tech stack, team capabilities, business constraints.
Questions:
Rule: Always check internal resources before external inspiration.
User familiarity = conventions from similar products, learned behaviors, competitor patterns.
Questions:
Rule: Familiarity reduces cognitive load. Novelty requires justification.
Research = user testing, analytics, academic studies, heuristic evaluation.
Questions:
Rule: Research trumps opinion, but absence of research ≠ decision paralysis.
After weighing all three sources:
Document your reasoning. Future you (and teammates) will thank you.
Every design decision is a bet. You're wagering time and resources on an outcome. The question is whether you're betting intentionally or accidentally.
Macro bets = Company-level strategic bets on how to win the market Micro bets = Individual design decisions within an interface
Critical Rule: Micro bets are only valid when intentionally supporting macro bets.
| Category | We win by... | Design implications |
|---|---|---|
| Velocity | Getting features to market faster | Reduce time-to-delivery, reuse components, find metaphors in other markets |
| Efficiency | Managing waste better | Design systems, reuse patterns, reduce WIP |
| Accuracy | Being right more frequently | Stronger research, measure with instrumentation, discovery sprints |
| Innovation | Discovering untapped market potential | Uncover "fog of war" with better discovery, find parallels in other markets |
When [situation],
I want to [motivation],
So I can [desired outcome].
Good JTBD: "When I get emails, I want to organize them so I don't lose important information."
Bad JTBD: "Let me add tags, labels, and folders to my email so I can sort things according to my system."
The difference: Good JTBD focuses on outcome, bad focuses on feature.
Before diving into design:
Author's Note: Do this fast or don't do it at all. Don't get stuck whiteboarding JTBD. Trust your intuition. The goal is informed speed, not perfect analysis.