How to validate a startup idea before writing code
Most failed startups did not build the wrong thing badly. They built the right thing well, for people who did not want it enough. Validation is how you find that out while it is still cheap.
Write down the problem, not the solution
One sentence: who has the problem, what it costs them, and how they cope today. If you cannot fill in the "how they cope today" part, you do not know the market yet, and everything downstream will be guesswork. The coping method is your real competitor. It is almost never nothing.
Talk to fifteen people who have the problem
Not friends, not other founders. People who live with the problem. Fifteen conversations is roughly where patterns stop surprising you. Ask about their life, never about your idea:
- Tell me about the last time this happened. What did you do?
- What does dealing with it cost you, in hours or money?
- What have you tried? Why did you stop?
- What would have to be true for you to switch approaches?
- Who else should I be talking to?
The trap is pitching. The moment you describe your solution, people become polite, and politeness is worthless data. Ask about behaviour: what they did, not what they would do. Stated intentions lie; past behaviour does not.
Test demand with a page, not a product
One landing page: the problem, the promise, a signup or a pre-order button. Point a small ad budget at it, a couple of hundred euro is enough, and measure. Conversion rates above a few percent from cold traffic mean the message lands. Silence is also an answer, and it costs you a week instead of a year.
Sell it before it exists
The strongest signal available to an early stage team is money or its equivalent: a deposit, a signed letter of intent, a booked pilot with a named start date. People will say kind things about almost any idea. They will not sign kind things. If nobody commits even conditional money, the idea has failed validation, and that is the system working.
Signs the idea failed validation
- Nobody in fifteen interviews describes the problem unprompted.
- Everyone copes fine, or has already solved it in a spreadsheet.
- People like the idea but will not pre-order, deposit, or commit time.
- The only enthusiastic responses come from people who would not use it themselves.
Any one of these is a yellow light. Two of them together mean stop and pick a different problem, which is the cheapest pivot you will ever make.
Research that costs nothing
Validation eats market data, and market data is usually behind paywalls. This is the part first time founders miss: a public library card in Ireland gets you into industry reports, company databases and business titles that would cost hundreds of euro a year individually. The setup guide at carlowlibraries.ie covers joining online in about five minutes. Fifteen interviews plus a real market report is a stronger investor conversation than any pitch deck polish.