Say Person B is proposing a change from Solution A -> Solution B.
Person A thinks Solution A is still the correct approach.
I think it's important to understand in detail what aspects of Solution B are appealing to Person B. It may be subtle, psychological, and/or political, but there's a reason why this change is important to person B. Person A & Solution A must address those issues, or risk eventual obsolescence.
It's also entirely possible that the more correct approach is Solution C, and this process can help establish what exactly that is.
Say Person B is proposing a change from Solution A -> Solution B.
Person A thinks Solution A is still the correct approach.
I think it's important to understand in detail what aspects of Solution B are appealing to Person B. It may be subtle, psychological, and/or political, but there's a reason why this change is important to person B. Person A & Solution A must address those issues, or risk eventual obsolescence.
It's also entirely possible that the more correct approach is Solution C, and this process can help establish what exactly that is.