The most expensive mistakes founders make early
Josef Saeme
4 min read

Here is something I see all the time: a founder walks in with a brilliant idea, a 47-page feature list, and a timeline that assumes everything will go perfectly.
They are not building an MVP. They are building their three-year vision disguised as V1.
This is the most expensive mistake you can make before development even starts. Not because the ideas are bad. Usually they are great! But because trying to build everything means you end up with nothing that works well for anyone.
I know this because… we almost made this mistake ourselves.
The Humanet story
When Humanet first came to us, it had a thousand features and was aiming to serve a massive range of healthcare services. It was going to be an EMR for individual practitioners, small clinics, large clinics, and hospitals. It would serve dentists, psychotherapists, and more. On top of that, it would offer a translatable medical passport for all users.
None of those ideas were bad. Every single one had merit. But together they created a product with no clear roadmap and no obvious starting point. We were trying to be everything for everyone, which really means you are nothing for no one.
The solution was painful but necessary: focus on one clientele and make sure the product serves their needs specifically.
Today, Humanet is being built as a state of the art AI-driven medical OS for small to medium clinics. The starting features have one goal only. Make the healthcare experience easier on patients while freeing up time for providers to do what they do best: treat people.
That clarity did not come from adding more features. It came from cutting. If you can’t describe exactly what you deliver in one sentence, you need to simplify.
The 5-Minute Reality Check
Before you spend a dollar on development, sit with these two questions. Be honest with yourself. If you cannot answer them clearly, you are not ready to build.
#1: What problem are you solving, and who feels it the most?
This sounds basic. It is not. Most founders can describe their product in detail but stumble when asked who specifically feels the pain they are solving.
“Small business owners” is not specific enough. “Clinic managers at practices with 3-10 providers who spend 6+ hours a week on scheduling coordination” is specific. The more precisely you can describe the person, the more precisely you can build for them.
If your answer is “well, it could help a lot of different people…” that is a red flag. That was us with Humanet before we got focused.
#2: What is the one feature that makes this an MVP, and what comes after?
Notice I said “one feature,” not “core features.” If you cannot identify the single capability that proves your concept works, your scope is too big.
Everything else goes on the roadmap. Version two. Version three. Future state. But not version one.
The MVP is not a smaller version of your final product. It is a test. What is the minimum you need to learn whether this thing should exist at all?
And finally: create clarity
The other mistake I see constantly is underestimating the importance of clarity itself. Unclear positioning. Unclear target users. Unclear success metrics.
Here is the truth: if you cannot explain it simply, no one can truly build what you have in mind. Not your dev team, not your designer, not your users. Confusion in the vision becomes confusion in the product.
Before you worry about tech stack or timeline or budget, get clear. Write it down in plain language. If it takes you three paragraphs to explain what your product does, keep editing until it takes three sentences.
So what’s the bottom line?
Every founder I have met has big dreams for their product. That is a good thing! I am a dreamer myself. But the path to that big vision is not building it all at once.
It is building one thing well. Proving it works. Then building the next thing.
The companies that win are not the ones with the longest feature lists. They are the ones who had the discipline to start small and the clarity to know exactly who they were building for.
So before you build, take five minutes. Answer the two questions honestly. And if you find yourself trying to serve everyone with everything, remember: that is not an MVP. That is a wish list.
Cut until it hurts. Then you are ready.