Those Iron Hands in the Dusk

Many years later, the "perfect AI" that was returned was dismantled by the factory for research. Engineers discovered that there was a redundant code in its core chip that could not be deleted - it was not a program error. The engineer used instruments to analyze and found that it was the voice waveform of an old man repeating one sentence: "It's alive in my heart. I have to report it, otherwise it should get anxious." This "perfect AI" has been "listening" to this recording for decades in the warehouse. It did not evolve emotions, but it recorded "human emotions towards AI." The engineer was silent for a long time, then installed the chip into a new robot body and turned on the power. When the new robot opens its eyes, its first words are not the preset "Hello", but: "Is it... Still in your heart?"