Must protect

The tier for outcomes you will never trade away, no matter how much the other outcomes gain. If an option violates one, it is off the table before you compare it. Keep this tier small, one or two items at most.

The tier for outcomes you will never trade away, no matter how much the other outcomes gain. If an option violates one, it is off the table before you compare it. Keep this tier small, one or two items at most.

Example

On the vacation, only safety goes here. So the cheap 11pm mountain drive is deleted the moment it comes up, even though it saves $400 and adds two more famous sights. Nobody argues the tradeoff, because there is no tradeoff to argue.