Validate your idea

Validation is buying information before you buy inventory. The goal is not applause; it is evidence that people will act. The strongest evidence is behavioral: a deposit, a signed letter of intent, a booked appointment, a waitlist signup with a real email. The weakest evidence is agreement in conversation. Design the smallest test that could plausibly change your mind, and decide the pass/fail number before you run it. A common mistake in validation is asking people whether they like an idea instead of asking them to do something that costs them time or money. Agreement in conversation is nearly free for the person giving it, so it predicts almost nothing about future buying behavior. Every validation test should include some form of cost to the responder, even something as small as filling out a detailed form or making a phone call, because effort is a better predictor than enthusiasm. You can judge whether a validation test was designed well by checking if you set the pass and fail numbers before you saw any results. A test with no pre-set target invites you to reinterpret a mediocre outcome as a success after the fact, which defeats the purpose of testing at all. If you find yourself explaining away a low number after the test ran, that is a sign the target should have been written down beforehand. When a validation test fails clearly, the instinct to launch anyway because of time or money already invested is one of the most expensive habits in early business. A failed test is only valuable if it changes something before the next attempt, whether that is the price, the audience, the format of the offer, or the problem itself. Running the identical test again without changing a variable simply repeats the same lesson at the same cost. A woodworking hobbyist wanted to sell custom furniture full time. Before ordering wood and building inventory, he posted three finished designs with a $200 deposit link and told his pass condition would be five deposits within two weeks from people outside his immediate friends and family. He got two deposits, both from friends, which technically looked close to passing but failed his stricter condition. Rather than count it as a partial win, he treated it as a real no, adjusted his designs based on feedback from people who declined, and ran a second test to a colder audience the following month.

Key takeaways

• The strongest evidence is behavioral: a deposit, a signed letter of intent, a booked appointment, a waitlist signup with a real email.
• Design the smallest test that could plausibly change your mind, and decide the pass/fail number before you run it.
• Money changing hands is behavior; praise and likes are cheap.

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