It's never any engineer's job to make decisions/define constraints. That's on the business side whether it be management, marketing, analytics teams, etc... I s

It's never any engineer's job to make decisions/define constraints. That's on the business side whether it be management, marketing, analytics teams, etc... I seriously doubt any engineer decided this. The decision to go with a single non-redundant system and use software to improve safety margins seems like a cost cutting measure which definitely seems more like something that would have been mandated as one of the design goals. Maybe engineering presented various options or something like that, but I find it very hard to believe the risk decision laid anywhere else other than very senior management.