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Confession: I used to think the hardest part of building a product…

X (Twitter) post

Confession: I used to think the hardest part of building a product was knowing what to build. It's not. It's knowing what not to build. That's where most founding teams lose the thread. Someone raises a feature request, someone else thinks it's a great idea, and before long you're three months into building something that impresses people in demos but doesn't solve the actual problem your customer wakes up thinking about at 2am. At Agent Craft, that principle sits at the center of every product decision we make. What not to build is the real filter. Not "can we build this?" We can usually build it. Not "would customers ask for it?" They ask for everything. The question is whether it belongs in the product or whether it's a distraction dressed up as ambition. I think a lot of SMB founders get this backwards. They ship features to signal progress, to have something new to say in the next investor update, to feel like they're moving. And they are moving. Just not necessarily forward. Here's what I've seen actually work: start narrow, talk to people early, and be prepared to pivot hard when the feedback tells you something uncomfortable. Not when it confirms what you already believed. When it contradicts it. The people who wait until their product is "ready" are often the same people who never launch, or launch so late that the window has closed. If you don't start sharing and talking to people, you never actually know what you're building. You know what you think you're building, which is a very different thing. So here's the question I genuinely want to push on: Is "what not to build" actually harder than deciding what to build, or is that just something founders say to sound strategic when they're really just afraid of scope?

Mark HadfieldJun 5, 2026Published to X - Mark HadfieldView original ↗

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