The mark of a great business is product/market fit — successfully selling to the market is far easier said than done. What *is* much, much easier is proving that a business idea is a bad one. You start with the question “what needs to absolutely be true?” and see if you can quickly prove one or more of them false.
The odds you can do even one thing well when starting a business are LOW. The odds you can simultaneously do multiple things well are VERY low. And, if you’re trying to derisk your business, that’s the first place you should start. Find your one good thing, and focus on it.
Sales is the difference between running a company and having a hobby. So if you’re the founding CEO, or want to be a founding CEO, but you don’t want to make the first 30 sales, don’t be the fucking founding CEO. Full. Stop.
The investor hears it and at first they don’t believe you. “Nah,” they say, as they start to argue with you whether that’s the way the world really works. Then, after a beat or two, they go, “wait, you’re right.” And after another moment, they think “fuck, that’s the only way it can be.”
Starting with wireframes is the equivalent of “Ready, Fire, Aim”. Even before you’ve spent the time to capture all of the user needs, you’re off to the races, drawing pretty pictures.
“That’s interesting” does not in any way, shape or form mean the person is excited about your company or wants to buy your product. All it means is they don’t want to be a dick. “That’s interesting” is what people say when they’re trying to be polite.