As someone who has done this a few times from pen/paper/excel to actual DDD software, it's really not that hard to shoulder surf and ask lots of questions about edge cases. At least initially. Though my favorite answer to those questions is: "never happens." Thus you end up with `BobSaidNeverHappensException` just to be cute.
But really, the software is there to solve a problem, so you end up shoulder surfing while the "expert" uses both systems simultaneously, and they're asking you questions and you're thinking about how you may rearrange the UI from their feedback. It's extremely iterative. The "domain expert" also becomes an expert with the software as they learn about all the things you implement.
But really, the software is there to solve a problem, so you end up shoulder surfing while the "expert" uses both systems simultaneously, and they're asking you questions and you're thinking about how you may rearrange the UI from their feedback. It's extremely iterative. The "domain expert" also becomes an expert with the software as they learn about all the things you implement.