Are You Saying That Use Cases Are Not Sufficient?

Use cases are a package of things, or a package of requirements and flows of information that are actually quite dangerous. And so i tend to not use requirements, definitely noat the start of the project. What i tend to do is to break a system down to the interactions between the actors in that system. If we're going to build something that's more resilient, or something that tends towards anti fragility, then we need to make sure that these flows of information can keep happening,. Are absolutely not sufficient.