What is the fine-grained topic of the following text: Walls have two sides to them: when, as Vilém Flusser says, the outside wall is political and the inside one secretive it is a ‘homeless’ wall (as in Berlin or China) and has the function of protecting the “secret place of the heart from being visited by evil spirits.” This metaphor is an important analogy for the political and social framing conditions in the Biedermeier era, a time marked by the bourgeoisie’s flights into the pleasures and ‘secret’ intimacy of the home. Only return the topic.
The metaphorical significance of walls in the context of the political and social conditions of the Biedermeier era.