You could do real time sentiment analysis on what someone is saying and it it is negative open a new input area for an explanation of their anger, greater than

You could do real time sentiment analysis on what someone is saying and it it is negative open a new input area for an explanation of their anger, greater than 500 chars (and validated as well as possible for realistic word structure), so the person would have to think through their anger, and possibly change their opinion or push it through with its attendant explanation as a expandable area on the message.