The goal of early validation is not to confirm your genius, but to risk being proven wrong before committing resources. Negative feedback is a valuable outcome that prevents building the wrong product. It often reveals that the real opportunity is "a degree to the left" of the original idea.

Product-market fit isn't just growth; it's an extreme market pull where customers buy your product despite its imperfections. The ultimate signal is when deals close quickly and repeatedly, with users happily ignoring missing features because the core value proposition is so urgent and compelling.

Sales are a vanity metric for product-market fit. The real test is having ~25 customers who have successfully implemented your product and achieved the specific ROI promised during the sales process. If you don't have this, you have a product problem, not a go-to-market problem.

Pre-PMF founders get stuck in a frustrating loop: their outreach hypothesis is wrong because they haven't sold anything, but they can't get conversations to fix the hypothesis because it's wrong. This circular trap prevents progress until the founder breaks the cycle by changing their approach to simply getting meetings, not validating an idea.

Having paying customers doesn't automatically mean you have strong product-market fit. The founder warns against this self-deception, describing their early traction as a "partial vacuum"—good enough to survive, but not to thrive. Being "ruthlessly honest" about this gap is critical for making necessary, company-defining pivots.

Founders often quit for the wrong reason: struggling to schedule meetings, which is merely a lack of data. The true signal to pivot or quit is when you've successfully engaged potential customers who have clear demand (pull) and they still explicitly reject your solution after multiple iterations.