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Diagnostic question

The main benefit, in users' words

Finds the main benefit users who love the product say they get, and what would improve it for near-lovers.

Value

Plain label: main benefit question

The question we ask

What is the main benefit that users who love the product say they get, and what would make it better for those who only somewhat like it?

Sources

Book content is paraphrased, never quoted at length. Last verified October 24, 2026.

Your product

Find the stage your product is stuck in

Gamify It reads your product, picks the one move that matters at its stage, and sizes the test to your traffic. Connecting is free; a Pro subscription starts it.