Customer Discovery
You cannot design a feeling for someone you have not met. Every strategy and Tool, Technique, or Practice (TTP) in this handbook assumes you know whose experience you are designing—who the customer is, what state of need they arrive in, and how they already work, talk, search, and buy. The Feeling North Star has an owner; this section is how you find that owner before you lock the feeling.
Customer discovery (Steve Blank) means testing hypotheses about the customer’s problem outside the building—listening in real context—before committing to a solution, a funnel, or a north star. Each page below teaches the idea in full (definitions, mechanisms, practice), then offers worksheets and an agent path. The worksheets are tools; they are not a substitute for the knowledge. This is not a discovery textbook, but it is the minimum emotional product design cannot skip.
flowchart TD Interview[Interview method] Interview --> Who[Who: ICP and personas] Interview --> Why[Why now: need states] Interview --> Work[What without you: workflow] Interview --> Talk[Talk, search, and buy] Who --> Synth[Synthesis] Why --> Synth Work --> Synth Talk --> Synth Synth --> North[Feeling north star] North --> Strategies[Strategies and TTPs]
Interview method runs through every question. Synthesis is the gate: validated findings become durable project docs (DocSlime / docs/) before you lock a north star or run a strategy.
| Page | Question |
|---|---|
| Ideal Customer and User Profiles | Who gets the most value—and who has the experience? |
| Need States and Awareness | Why now? Circumstance, emotional charge, awareness stage |
| How Customers Work Today | What without you? Workflow, tools, workarounds |
| How Customers Talk, Search, and Buy | In whose words, which channels, what buy process? |
| Interview Method | How do you ask so you get evidence, not politeness? |
| Synthesis | What becomes durable—and where does it live for agents? |
Skill path: /productfeeling sequence → Customer discovery playbook (init → persona → jobs → map → tone → handoff). No external discovery skill—ProductFeeling + DocSlime.
Further reading
Section titled “Further reading”- The Four Steps to the Epiphany (Steve Blank) — Customer development and the discovery/validation sequence.
- Customer Development is Not a Focus Group (Steve Blank) — Discovery tests hypotheses; it does not collect feature requests.
- The Mom Test (Rob Fitzpatrick) — Questions that produce evidence instead of politeness.
- User Interviews 101 (Nielsen Norman Group) — Interview craft: structure, probing, and bias avoidance.