At pre-seed, an investor has very little history to work with. The product may be a prototype, revenue may be zero, and the financial model is mostly assumptions held together by optimism and a spreadsheet.
So yes, the founder carries a lot of the underwriting. But “they’re investing in you” is too vague and not very useful. Investors are trying to work out how you think when the evidence is incomplete.
Do you know the customer well enough to describe what actually happens, rather than repeating the problem slide? Can you separate what you know from what you hope is true? When someone pushes on an assumption, do you defend it out of habit or explain what would make you change your mind?
A hard question can be more revealing than a perfect answer. I would rather hear a founder say, “We don’t know that yet, but this is what we’ve seen so far, and here’s how we’re testing it,” than watch them bluff their way through a number they just made up.
Some of this should come through in the deck. Founder-market fit is more than a bio slide full of employer logos. It is the reason you noticed the problem, what you learned by being close to it and the choices you made because of that knowledge.
The company still matters. So do the market, the product, the timing and whatever early evidence you have. A strong founder does not make a weak opportunity investable. But at pre-seed, your judgment becomes part of the evidence because the investor is backing decisions you have not made yet.
I would not tell a founder to stop thinking about projections. I would tell them to know which assumptions are fragile and why they chose them. You do not need to pretend every answer is certain but you do need to know which parts are evidence and which parts still need testing.
