I was trying to discuss with a friend about some human behaviour.
He is always stating that each men is not robot and every generalization is false.
I think is that he is attacking my formal argumentative errors but proving that I'm not a great speaker is not showing his thesis is correct.
I think that there are many similarities among human beings. In fact saying that we have red blood or that manipulation techniques are effective with many human being is not a generalization.
Saying that every human being is unique is not proving that human being are completely different from the others. What he says sounds to me like: "we cannot know nothing because everyone is unique".
Can I state that his attacks are not formally correct?
Which would be the best way to ask the question?