The Validation Problem

Ask most first-time founders what validation they did before building, and you'll hear something like: "I talked to a few friends and they thought it was a great idea." Friends are not customers. Enthusiasm is not demand. And building a product nobody pays for is one of the most common — and costly — mistakes in the startup world.

Real validation means proving that specific people have a real problem they would pay to solve — before you build the solution.

The Validation Stack: Four Levels of Evidence

Think of validation as a stack of evidence, from weakest to strongest:

  1. Level 1 — Interest: People say they like the idea. (Weak — almost meaningless)
  2. Level 2 — Intent: People say they would use or buy it. (Weak — words are cheap)
  3. Level 3 — Commitment: People sign up for a waitlist, give you their email, or agree to a pilot. (Moderate)
  4. Level 4 — Payment: People give you money — even if the product doesn't fully exist yet. (Strong — the only real signal)

Your goal is to reach Level 4 as quickly as possible, with as little product built as possible.

Technique 1: The Problem Interview

Before pitching your solution, spend time understanding the problem. The classic approach, popularized by Rob Fitzpatrick in The Mom Test, involves asking about people's past behavior rather than hypothetical futures:

  • "Walk me through the last time you had to deal with [problem]."
  • "What do you currently use to solve this?"
  • "What's the most frustrating part of your current approach?"
  • "How much does this problem cost you — in time or money?"

If you conduct 15–20 of these conversations and hear the same pain points repeatedly, you have a validated problem. Now you can start thinking about solutions.

Technique 2: The Landing Page Test

Build a simple landing page describing the product (even though it doesn't exist), and drive traffic to it. Measure:

  • Email signups or waitlist conversions
  • Click-through rates on a "Request Access" or "Pre-order" button
  • Time spent on the page

Tools like Carrd, Webflow, or even a simple Notion page can work. Spend a small amount on targeted social or search ads to drive cold traffic. A low conversion rate is valuable information — it tells you the positioning isn't resonating.

Technique 3: Concierge MVP

A Concierge MVP means delivering the outcome of your product manually — without automation or technology — to a small group of real users. If your product is supposed to automate a workflow, do it by hand first. If it's supposed to generate reports, create them manually in a spreadsheet.

This approach lets you:

  • Deliver real value immediately and see if users care
  • Deeply understand the problem before automating it
  • Charge real money — validating willingness to pay

Technique 4: Pre-Sales and Letters of Intent

In B2B especially, getting even a non-binding letter of intent (LOI) or a small deposit from a potential customer is powerful validation. It signals that someone is willing to put their credibility or money behind the promise of your product.

Don't be afraid to ask for this early. The worst a prospect can say is no — and that's also valuable information.

Red Flags That Your Idea Isn't Validated

  • Nobody will get on a 20-minute call to discuss the problem
  • People love the demo but won't commit to a pilot or pre-order
  • Everyone you talk to has slightly different pain points (fragmented market)
  • The only people excited are other founders or tech enthusiasts, not the target customer

When to Stop Validating and Start Building

Validation can become a trap — a way to delay the hard work of building. A reasonable threshold: if you have 5–10 paying customers or signed LOIs from your ICP, you have enough signal to build the first version. Move fast, keep it focused, and let real usage guide what comes next.