This chart depicts the Primary goals associated with the primary interaction modes.

• For Routine operation, the primary concern is to facilitate the interaction, namely, to assure seamless, carefree operation
• For operating (in exceptional situations ) the primary concern is to ensure that the alarms are effective, namely, the the operators are aware of the change in the system state
• For operating Under threat (in unpredictable situations ) the primary concern is to ensure that the interaction is restricted to safe-proof activity.

Updated on .