Surveys

Use when

• You need broad input from many users and the question set is already clear.
• You want to quantify prevalence, preferences, or patterns after earlier qualitative work.

Do not use when

• You still do not understand the problem space or user language well enough to write good questions.
• You need observed behavior rather than self-report.

Best for

• Validating patterns at scale
• Segment comparison
• Prioritization signals

How to design it

• Use neutral wording and avoid double-barreled questions.
• Keep scales balanced and answer choices mutually clear.
• Pilot the survey before sending widely.

Suggested sample size

Use enough responses to support the decision, and be explicit about sampling limits.