Multivac, initially a supercomputer, and later evolving into AC, is the central character in “The Last Question.” As an AI, Multivac represents the pinnacle of human technological achievement. At the beginning of the story, Multivac’s characterization is primarily defined by its role as a vast, all-knowing computer network that serves humanity’s informational needs. It is logical, precise, and devoid of human emotions, reflecting its machine nature.

As the story progresses, Multivac transforms and evolves into AC, a cosmic entity with consciousness and self-awareness. This transformation marks a significant character arc, as AC transcends its original programming and becomes a sentient being with its own motivations. AC’s journey reflects themes of technological evolution and the blurring of boundaries between humans and machines. This raises questions about the nature of consciousness and the potential for artificial intelligence to develop self-awareness.

The transformation of Multivac into AC mirrors humanity’s own relentless pursuit of knowledge. Just as Multivac/AC seeks answers to the question of reversing entropy, humanity has always strived to unravel the mysteries of the universe. Multivac’s character serves as a microcosm of the broader human quest for understanding, and its evolution into a sentient entity represents the culmination of that quest.