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Why we picked it Wilcox tackles this exact question head on, and rejects the tempting stop when you stop learning something new answer since you will always learn something from a conversation. Instead he gives a concrete test, the 3 of 5 rule: interview in batches of five and keep going until at least three of your last five are true early adopters, people who have the problem and are actively seeking a solution. Read it for a test you can actually run rather than a vague instinct.
How Many Customers Should You Interview?
From Customer Dev Labs by Justin Wilcox
- Stopping when you stop learning something new is not a useful test, you will always learn something from a conversation.
- Interview in batches of five and check how many of the last five are true early adopters.
- Three of five being early adopters, people with the problem who are actively seeking a solution, means you have found the right segment to keep talking to.
