Idea validation is a decision procedure, not a confidence exercise

At a glance

Only one belief can be on trial at a time

A test that moves audience, price and channel at once cannot tell you which of them was wrong. Pick the single assumption whose failure would waste the most work, from seven types: audience, pain, promise, channel, price, timing, and willingness to switch. Rank them by impact if wrong multiplied by how uncertain you currently are, and write the winner down before you touch anything else.

• Audience — you are talking to people who do not have this problem often enough to pay for it.
• Pain — the problem is real but tolerable, so nothing changes when you offer relief.
• Promise — people want the outcome but cannot tell from your words that you deliver it.
• Channel — the offer is fine and nobody who needs it ever sees it.
• Price — the outcome is worth something, just not what you are asking.
• Timing — it matters in March and you are asking in September.
• Willingness to switch — the current workaround is bad and free, and free is winning.

A promise a stranger cannot act on is not a test

Write one sentence containing four elements: who it is for, what outcome they get, why it matters now, and what they should do next. If any element is missing, the reader supplies their own version and you learn nothing about yours. Read it aloud to someone outside the project; if they ask a clarifying question, the sentence has failed and the test has not started.

• Who: a group specific enough that a member recognises themselves in three words.
• Outcome: a state they can picture, not a feature list.
• Now: the reason this week rather than someday.
• Action: exactly one, and it must be observable by you.

Behaviour-based methods exclude the survey by construction

Nine methods carry real information because each one costs the respondent something: interviews with a clear ask, landing pages, direct outreach, waitlists, demos, referral tests, pilot offers, deposits, and pre-orders. Opinion surveys cost nothing, so they measure politeness. Choose the most expensive method your audience will tolerate this week — the more it costs them, the less you need.

• No audience yet, 40 contacts: outreach with a call ask, or three paid pilot offers.
• A small list or community: waitlist with a qualifying question, or a demo booking.
• Budget for traffic: landing page with a checkout start or deposit as the action.
• Existing clients: a referral test, which prices the promise and the channel at once.

The threshold has to exist before the first message goes out

Decide in advance what counts as enough: replies, calls booked, qualified signups, referrals, checkout starts, deposits, payments, or clearly stated objections. Write the number and the deadline in the same sentence. A threshold set afterwards is a rationalisation with a decimal point.

Read seven dimensions, then obey the rule you wrote

Score urgency, audience fit, problem pain, promise clarity, willingness to pay, objections, and buyer action. Any dimension with too little data is marked insufficient evidence rather than averaged away — a half-filled scorecard must not be able to pass. Then take the decision your prewritten threshold requires: build, revise, retest, launch or stop.

• Build — threshold met and at least one person paid or committed money.
• Revise — interest is real, the promise or price is not; change one variable and retest.
• Retest — the test was contaminated (wrong list, broken link, bad send time); rerun it clean.
• Launch — you already have paying commitments and the constraint is delivery, not proof.
• Stop — two clean rounds, repaired promise, different audience, still nothing qualified.

A completed scorecard is evidence of work, not evidence of demand

The most common failure in this method is treating the artefact as the result. Eleven filled fields with zero money commitments is a documented no. The scorecard's job is to make that no unarguable and dated, so you do not relitigate it in month four when the idea starts feeling good again.

The numbers move for СНГ reach, and so do the money instruments

Willingness-to-pay tests need an instrument the buyer already trusts. In Russia and the neighbouring markets that usually means an СБП deposit link or a ЮKassa счёт rather than a card checkout; B2B pilots are structured as a счёт-оферта or a short договор оказания услуг. Audience reach lives in profile Telegram chats, VK communities, Avito rubrics and industry catalogues — and their reply rates differ enough that you should record your own baseline instead of importing ours.