I don't think there is any fundamental reason why gender is here, the soul is gender neutral. The same fragility of personality is also reflected in Walter. Desires often make him change his original intention at critical moments, and he changes it again and again. When the suppression of desire turned into a kind of hatred, irrationality also made him as morbid as Erika, or even more violent and crazy, and the only part of his personality endowed by ideology collapsed in an instant.
The "love" between them, as Walter said, was incomprehensible to each other before, because at that moment, that part of his healthy personality endowed it with the corresponding reason, and could distinguish Erika's morbid request, But what's interesting is that Erika seems to have awakened after suffering, which can be seen from Erika's denial of masochistic intentions when Walter began to abuse, which is that the degree of lack of personality has been reversed in the two people.
Erika's so-called venting to her mother is actually a symbolic revenge for not being fully born in personality after she stepped out of the mother's body. And in the end, when she stabbed her own body, I think Haneke wanted to tell us that after the soul is lost, the body is just the body. You can only bleed when you stab it, but you can't feel it for a long time. .
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