Extraterrestrial civilizations. What is your opinion?

But how can he be wrong if he is right, but says that he is wrong? Or how can he be right if he is wrong and says that he is wrong, and at the same time he could be right, although in reality he is wrong and says that he is wrong, but he is right in that he is wrong.:D

Did you carefully read his question and my answer?
Let me explain: this expression ( "Am I right when I say that I am wrong" ) is meaningless on its own; it only makes sense in the presence of another statement to which it is applied.
For example: He says: an apple is a vegetable ( here he is wrong ). Then he says: I am wrong!, it turns out that when He says he is wrong, he happens to be right.
And vice versa: He says: an apple is a fruit ( here he is right ). Then he says: I am wrong!, it turns out that when he says he is wrong, he happens to be wrong.
I hope the situation has become a bit clearer for you now.