Domain Driven Design

I don't know that there is one clear answer and I think that's the point of my question is as always it depends right but which certainly when dealing with life as you mentioned with the airlines aircraft medical and then after that financial certainly have to think very carefully about that. Having programmers making those decisions just horrible that's why domain driven design counts so much if used properly we would go to the business and ask all those questions  and they will gladly adjust to that. If you're some rogue programmer just making up the rules and because you need to get the job done or whatever well you know how many how much loss can you afford for being responsible for that kind of bad decision.