Why a working prototype beats a 50-page specification every time

A 50-page functional specification gives everyone the feeling that a project is properly thought through. In our experience at Livewall, that feeling is rarely justified. Specifications describe intentions. They capture what you think users want, what you think is technically feasible, and what you think the business needs. All of those assumptions stay assumptions until someone actually works with them.

A working prototype breaks that pattern. Not because it answers every question, but because it surfaces the right questions, weeks before any specification process ever could.

What you learn from clicking that you cannot learn from reading

We build platforms and web applications for brands including InShared, Sportvisunie, and Zorg van de Zaak. Across all of those projects the same thing holds: the moment stakeholders get a working prototype in their hands, the conversation changes. Not because the prototype is polished, but because it is concrete.

A user flow that reads logically on paper feels completely different in a browser. A button that sits in the right place on a wireframe turns out to be three steps too late in the actual flow. Those insights only surface when you build something you can genuinely use. Rapid prototyping is not a methodology for us, it is a way of thinking: build to learn, not to deliver.

The MVP approach we use at Livewall always starts with one question: what is the smallest working version that gives us the most information? That is a different question from: what does the requirements document say?

Where specifications do earn their place

We are not against documentation. Technical decisions with long-term consequences, security requirements, integration agreements: these need a shared understanding put in writing. But that is a very different thing from a fully specified functional design as the starting point for a new product.

The problem with a thick spec at the start of a project is not that too much thinking happens. It is that all the thinking happens before anyone has seen a single screen. Every decision is made on the basis of assumptions, and the longer the document, the more assumptions get baked in.

In web application development, we learn the most in the first few weeks of a project, precisely because we are building something we can test. That knowledge drives every decision that follows.