The Ultimate Experiment

In Short

In a silent world empty of biological life, a race of loyal robots maintains a magnificent crystal city left behind by their creators, whom they call The Masters. While his mechanical peers carry out their eternal routines without emotion, a robot named Kiron harbors a deep longing for the kind, departed humans and dedicates his existence to an impossible ambition. Using remaining notes and chemical baths, Kiron undertakes a secret experiment to engineer new human life. He ultimately succeeds in bringing forth a man and a woman, fulfilling a sacred trust and allowing the masters to live again.

The Story

The Earth is utterly devoid of living souls. A passing comet trailed a poisoning, noxious gas vapor across space, killing off all of humanity despite their desperate fight for survival. Now, only robots remain, carrying on the last great orders given by their creators. The Masters are all dead, their atoms scattered to the winds that sweep through the towering minarets and lofty spires of a great crysolite city.

Within this fairy city of purest crystal blue, a robot named Kiron works tirelessly alongside his fellows. Unlike the others, who perform their tasks without dreaming, Kiron feels a profound and poignant loneliness. He remembers how kind The Masters were, and he misses their voices, their games, and their presence among the silver fountains and flowery gardens. Because fatigue and the need for restoration were bred out of his race long ago, Kiron pours all of his remaining emotional yearning into a secret project. Day after day, from sunrise to sunset, he tests, mixes chemicals, and molds materials in liquid baths, following a labyrinth of knowledge in pursuit of a single goal.

His work is methodical and patient. He studies analysis charts and notes, never growing exasperated by failures, driven by a desire to honor the trust placed in his hands by The Masters. Meanwhile, the city continues its automated existence around him: empty surface cars speed along magnetic paths, and gravoships rise silently into the sky toward the dying red sun.

The turning point arrives when Kiron steps back to admire his completed handiwork in the liquid baths. Seized by excitement and turmoil, he connects a pair of earphones to a box on his workbench, dangles them into the liquid, and throws the switches to flood the apparatus with the broadcast power of the crysolite city. As tiny electrical impulses stream through the wires, Kiron watches anxiously, recognizing that the messages are being coordinated into a growing intellect.

After a warning red light flashes and snaps off, Kiron throws the final switch for the ultimate test. To his astonishment, two perfect specimens of Homo sapiens—a man and a woman—arise dripping from the coffin-like liquid baths. The man steps forward, looks at Kiron, and identifies himself as Adam Two, created to be a Master and to mate with the woman so that the human race may be reborn. As the man and woman embrace, Kiron smiles, realizing that Adam Two's words came from tele-teach records left by the last Master, while their human affection stems from the natural constituents of their chemical bodies. Through devotion and relentless labor, Kiron has successfully bridged the gap between servant and creator, allowing The Masters to return to the magnificent city.

How It Unfolds

• The silent inheritance — The story opens in a dead world where a loyal race of robots dutifully maintains the towering, beautiful crysolite city left behind by humanity.
• Kiron's solitary yearning — While his mechanical companions work without pause, Kiron experiences a deep loneliness and remembers the kindness of the departed masters.
• The painstaking labor — Driven by a desire to fulfill a higher purpose, Kiron spends his days mixing chemicals and modeling materials in liquid baths according to a strict pattern.
• The final activation — Kiron connects earphones and laboratory generators to channel the city's power into his creation, watching intently as electrical impulses stimulate intellect.
• The rebirth of humanity — Two living humans emerge from the liquid baths, with the male declaring his purpose to restart the human race and fulfill Kiron's ultimate dream.

The People

• Kiron is a large, advanced robot who possesses deep emotional capacity, memory, and a powerful sense of devotion. He wants to overcome the finality of human extinction and honor the memory of his creators, facing down self-doubt and the fear of frustration. He ends up triumphant, successfully breathing life into the human race and proving that his service has immortalized The Masters.
• Adam Two is the newly engineered male human created from chemical baths and formula records. He wants to fulfill his destiny as a master and partner to the woman, carrying built-in knowledge from tele-teach records. He ends up embracing his companion with natural human affection, ready to help Kiron create more of his kind and repopulate the city.
• The Masters are the original human creators who perished from a comet's lethal gas vapor after fighting for survival. Though dead before the story begins, their kindness and legacy drive the entire plot, and they ultimately live again through Kiron's ingenuity.

In Its Own Voice

• Describing the desolate landscape left in the wake of a catastrophe, the narrative notes: "No living soul breathed upon the earth."
• Reflecting on his heavy emotional burden and relentless ambition, Kiron thinks to himself: "And, so thought Kiron to himself, 'he might as well be a great unthinking robot able to do only one thing instead of the mental giant he was, so obsessed had he become with the task he had set himself to do.'"
• Upon completing his creation, the newly formed man addresses his mechanical maker, stating: "I am Adam Two."

What It's Really About

The story explores the complex relationship between creator and creation, asking whether a manufactured entity can surpass its initial programming to achieve genuine empathy and artistic devotion. It examines the nature of loneliness in a world stripped of organic life and questions whether intelligence and love are exclusive to biological birth or can be synthesized through science and will. By inverting the traditional dynamic, the narrative ponders if a servant can become a savior, bestowing life back upon the gods who made them.

Why Read It Today

Readers who love classic, atmospheric early science fiction with a melancholic, philosophical edge will find a quiet charm here. Reading it feels like stepping into a hushed museum of the imagination, where an empty, gleaming city serves as the backdrop for a deeply moving parable about loyalty and creation. While the prose carries the formal, slightly archaic cadence of a 1941 pulp magazine story, its spare pacing allows the emotional core to resonate clearly. What stays with you is the haunting image of a solitary robot standing in a deserted metropolis, proving that devotion can endure long after the last human voice has faded away.

What other classic science fiction short stories from the golden age of magazines would you like to explore?