In Sinclair Lewis's "Main Street," the protagonist possesses a keen sense of awareness, even in moments of fatigue. Her observant nature suggests a depth of perception that allows her to see beyond the surface of her surroundings. This quality highlights her sensitivity and insight into the lives of those around her.

As the story progresses, she remains unaware of the world's capacity for indifferent cruelty and monotony. This theme underscores a critical reality: that life can often be disappointing and unremarkable, which may lead her to confront harsh truths about her environment and the people within it.