You know, I live with my parents and I feel myself in theatre sometimes, really. Their communication, their marriage, their fights are as if on the stage. Very funny, but so much stupid sometimes! As an observer I see better the reasons of this or that event, deed or misunderstanding. Frankly speaking sometimes they act like fools, and I just wonder how they manage to avoid divorce. It is the most natural outcome of some of their fights. When I try to explain to my parents that it is impossible to live like this and act like this, that it is offensive and discriminating, and give examples, nothing goes out of it. Each of them believes that he or she did right and the opponent was wrong. And of course they aren't eager to listen to my arguments at all. So, I have an idea of inventing such a device to show a threat of conflicts. It would check the intonation and determine whether it may lead to fight and make a partner want to give up everything or not. I think it would work since