Answer:
The narrator refers to how, little by little, his sister and him stopped thinking about losing parts of their house, as if it didn´t bother them anymore. To live without thinking is to consciously ignore the bad things.
Step-by-step explanation:
The idea of not confronting the opposing forces in this story has been interpreted as an anti-Peronism symbol, due to Cortázar´s having been fired from his professorship after Perón became President of Argentina.