One of the major theatrical conventions was created during the realistic era. this convention stated that life on stage was the same as life in the real world, except that stage life was missing one crucial piece so that the audience could observe the action. The missing piece was the forth wall.
Around the 1870s, a general theatrical style known as realism emerged in 19th-century theater and persisted throughout the majority of the 20th century. In order to make texts and performances more true to actual life, it devised a set of dramatic and theatrical conventions. They involve simulating actual life on stage while omitting the fourth wall (on proscenium arch stages). Acting is done in a realistic, naturalistic manner that imitates real-life human behavior, and dialogue is delivered in this manner without the use of verse or poetic devices. Typically, psychologically motivated, narratives include commonplace, every day events.
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