If you’ve been building software for a while, you’ve probably experienced this at least once. A project starts with what sounds like a simple request. “We just need users to upload files.” Or “Can we add a notification system?” Everyone leaves the kickoff meeting feeling like they understand the problem, so the team starts designing APIs, discussing databases, and estimating tickets. Then, a few weeks later, the questions begin. Can users upload multiple files? How large can they be? Should notifications be real-time or eventually delivered? What happens if the network fails? Are different user roles allowed to see different data? Suddenly, the “simple feature” has become a series of architectural decisions that nobody talked about in the original meeting. The interesting part is that the architecture didn’t become more complicated because the engineers changed their minds. It became more complicated because the team finally understood what they were actually building. That’s why I think requirement gathering gets far less attention than it deserves. We often treat it as something that happens before the “real engineering” begins, usually involving product managers, business analysts, or a lengthy requirements document that nobody opens again after sprint planning. In reality, some of the most important engineering decisions are made long before anyone writes code or draws a system diagram. Good software isn’t just the result of good implementation. It’s the result of asking better questions early enough that you’re solving the right problem in the first place. In this article, I want to look at requirement gathering techniques in system analysis and design from an engineer’s perspective. Not as a checklist of elicitation methods or a software engineering lecture, but as one of the most practical skills you can develop if you want to design systems that survive contact with real users, changing business requirements, and the inevitable surprises that every project...