Break up/Types of argumentation/Exercise

Franziska wants to break up with her boyfriend Heinz. She thinks about the following explanations.

1. "You behaved already on the very first day completely weird. Since then, from each day to the next day, you got worse. Hence, you will continue to behave completely weird“.
2. "If I would stay together with you, I will end up as a sad bored person disappointed with life, and this I definitely do not want“.
3. "Well, if you do not love me, then I do not want you anyway. But if you love me, then I come to the conclusion that you are not able to behave in a way which fits your feelings. But then you are not mature, and then I do not want you neither“.

Which mathematical proof principles can be seen in these explanations?

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