Interestingly, Frederic Brown quotes this short, short story in the opening of his short story "Knock" but it doesn't appear that it in itself was every really a standalone story. According to Wikipedia, it comes from a paraphrase of three lines from a much longer essay by Thomas Bailey. The original lines went, "Imagine all human beings swept off the face of the earth, excepting one man. Imagine this man in some vast city, New York or London. Imagine him on the third or fourth day of his solitude sitting in a house and hearing a ring at the door-bell!"
Whether or not you'd agree that Brown's paraphrase could work as a complete, albeit incredibly short, story is moot as Brown uses it merely to begin his own story. Why was he the last man on Earth? Who was at the door? And wouldn't answering these questions destroy the charm and mystery?
Perhaps, but Brown's short sci-fi tale has a trick or two of its own. It's as implausible as an M. Night Shyamalan movie, but if you don't think about it too hard, it's enjoyable in its own right.
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