The Speclr Blog
For professionals who build with intent and precision.
From vague idea to clear specs - Product Definition, Requirements Engineering, Software Architecture, Backlog Planning, AI Development, and the structured practices that separate professional teams from everyone else.
BDD doesn't fail at the scenario. It fails before the first Given.
Many teams that do BDD correctly still end up building the wrong thing. Not because the process failed - but because BDD operates inside a scope that someone else set, implicitly, before the first Three Amigos session was scheduled. Here's where that line is, and what lives on the other side of it.
Requirements Engineering Is Already Happening in Your Team
Your team already does requirements engineering - in refinements, three-amigos sessions, discovery conversations. The only difference between teams that get it right and teams that don't is whether they do it on purpose.
Three levels. One flat list. That's why refinement never ends.
Most teams use one level of requirements for everything - epics, stories, and scenarios all collapsed into the same text field. That's not a detail problem. It's a layering problem. Here's the model that makes the difference.
Spec-Driven Development: What It Is and Why AI Makes It Non-Negotiable
Spec-Driven Development isn't a new idea. What changed: AI makes the spec executable. It's no longer a document that guides humans - it's a command that drives agents.
Your acceptance criteria aren't missing. They're just lying.
Most teams don't have a missing acceptance criteria problem. They have a precision illusion problem - criteria that look done, pass refinement, and still leave every meaningful decision to whoever is building. Here's why that happens, where the line actually sits, and how to write criteria that close the right decisions without closing the wrong ones.