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The third level at the Grand Central symbolizes man’s yearning to attain an ideal level of existence which is free from wars, worries, insecurities, tensions and a level which exudes calm, peace and tranquillity. Charley imagined this world briefly but could never get back to that world. His craving for such a world forced him to imagine things. He imagined that his psychiatrist friend, Sam, had succeeded in reaching there. He even saw a letter from Sam in his first-day cover collection. It was dated July 18, 1894 and posted to his grandfather’s address in Galesburg, Illinois. After this he redoubled his efforts to search the third level.
If it is only the imagination of Charley, then how do you explain Sam’s exchanging of currency at the coin shop? The fact that Sam too lived in a world of fantasy makes us understand that time travel was one way of escape for the modern man.