Acceptable Patterns
Essays on good thinking and good products.
Lesson 9 of 12: Synthesis

The Evidence Map

Interviews produce conversation. Decisions need evidence. The bridge between them is the Evidence Map, a structured artifact with three components that translates raw conversations into something engineering, design, and leadership can act on.

The Three Components

1. Who They Are

Not a full persona with hobbies and favorite colors. A focused characterization of the attributes that make this user type relevant:

  • Role and team context
  • Tenure with the product
  • Usage patterns (frequency, features used, recency)
  • Secondary attributes that produced meaningful variation (company size, platform, geography)

2. What Problem They Have

This is the component most teams underinvest in. It requires:

  • Problem severity, does it change behavior? Cost time? Money? Emotional energy?
  • Alternatives and workarounds, what are users doing today to cope?

3. What Success Looks Like

How would users know the problem is solved? Include both:

  • Goals, what would change in their workflow? What metric would improve? What emotional state would shift?
  • Non-goals, what will this explicitly NOT address? "This onboarding improvement will not cover enterprise SSO configurations."

Non-goals are scope control. Every feature becomes a kitchen sink without them.

Building an Evidence Map from raw interview notes

1
Raw note
"Participant said tracking compliance is a nightmare. She forwards training emails to herself as reminders and has a spreadsheet she updates manually every week."
A participant describes an elaborate workaround using Google Sheets and Slack reminders. What does this tell you?