" Understanding of natural language is what sometimes is called ‘AI complete,’ meaning if you can really do that, you can probably solve artificial intelligence. "
- Oren Etzioni

Understanding natural language, as mentioned by Oren Etzioni, a prominent figure in artificial intelligence research, involves comprehending and processing human communication in its myriad forms—spoken, written, through gestures, and more. This task is complex due to the nuances and context-dependency inherent in how humans express themselves. The quote suggests that mastering natural language understanding could be akin to unlocking many of the fundamental challenges faced by AI researchers.

When Etzioni refers to "AI complete," he is drawing a parallel with the concept of NP-complete problems from computer science, which are notoriously difficult to solve efficiently. Essentially, if an AI system can understand and interpret human language as well as a person does, it would likely be capable of performing other complex tasks that currently challenge artificial intelligence. This includes understanding context, sarcasm, humor, and subtle cues in conversation. Such capabilities imply the machine's ability to handle abstract thinking and reasoning on par with humans, which are critical components of achieving general AI.

Oren Etzioni is a leading expert in the field of AI and computer science, known for his work at the University of Washington and his role as the CEO of the Allen Institute for AI. His insights often reflect deep consideration of what constitutes true intelligence and how it might be replicated or augmented through technology. This quote exemplifies his broader view on the intricacies involved in creating machines that can truly understand human communication, which he considers a key stepping stone towards more advanced forms of artificial intelligence.