Introduction to AI

What is Artificial Intelligence (AI)? A Comprehensive Guide

English version of AI World 2026. 11. 5. 19:26
Artificial Intelligence (AI) is a foundational suite of software technologies designed to perform diverse functions that traditionally required human intelligence or massive data processing. This includes capabilities such as understanding spoken and written language, analyzing complex data, generating personalized recommendations, and translating text. To achieve these capabilities, AI intersects with computer science, data analytics, statistics, hardware/software engineering, linguistics, neuroscience, philosophy, and psychology.
1. The Origins and Academic Position of AI
The term "Artificial Intelligence" was first coined by John McCarthy in 1956 during the historic Dartmouth Summer Research Project on Artificial Intelligence. The foundational premise of this conference was visionary:
"Every aspect of learning or any other feature of intelligence can in principle be so precisely described that a machine can be made to simulate it."
In essence, it asserted that human-like intelligence could be engineered through programming. This seminar ignited decades of rapid advancement in computational research.
As an academic discipline, AI is a core branch of computer science, specifically within software technology. While computer science broadly encompasses theoretical computation, hardware engineering, and software systems, AI specifically draws inspiration from biological structures and cognitive processes to replicate intellectual activities.
Consequently, AI research is intrinsically tied to cognitive science and psychology. In the modern era, the exponential growth of AI has further deepened its interdisciplinary connection with linguistics, philosophy, brain science, and neuroscience.
2. The Four Stages of AI Development
AI is generally classified into four distinct evolutionary stages based on its capabilities and technological development:
  • Reactive Machines: These are limited AI systems that react only to pre-programmed rules and immediate stimuli. Lacking memory, they cannot retain past experiences or learn from new data. IBM’s chess-playing supercomputer, Deep Blue, is a classic example.
  • Limited Memory: These systems can learn from new historical data through artificial neural networks and machine learning models. Most modern AI technologies, including advanced Deep Learning, belong to this category, as they continuously improve their models over time.
  • Theory of Mind: This theoretical stage describes AI capable of understanding human emotions, beliefs, and psychological states. A "Theory of Mind" AI would mimic human decision-making and adapt its responses to social dynamics. While highly researched, a fully realized version does not yet exist.
  • Self-Awareness: The ultimate extension of Theory of Mind, self-aware AI represents a hypothetical machine that possesses consciousness, self-recognition, and genuine human-like emotional intelligence. It remains in the realm of futuristic concept.
3. From Narrow AI to AGI and Beyond
Everything we currently utilize under the name of AI is classified as Narrow AI (or Weak AI), meaning it is trained to perform a specific, limited set of tasks.
However, as we move toward the realization of Theory of Mind and Self-Awareness, AI transitions from mere software tools into entities deeply connected with the core of intellect. This threshold introduces Artificial General Intelligence (AGI)—the capability of a machine to sense, think, and act with the versatile comprehension of a human.
While historically viewed as a distant milestone, the rapid evolution of reasoning-focused large language models and autonomous agents in recent years has brought humanity closer to the horizon of AGI than ever before. Beyond AGI lies Artificial Superintelligence (ASI), a state where machine cognition surpasses human capability in every conceivable metric.

(Continued in Part 2)