A word model is not a world model.

Definitions matter.

Triggered by the original version of Language Models Represent Space and Time as challenged by others before:

A viral paper "Language Model Represents Space and Time" recently claims that LLMs learn "world models". As much as I like @tegmark's works, I disagree with their definition of world model.

World model is a core concept in AI agent and decision making. It is our mental… pic.twitter.com/67ssYHEU6T

— Jim Fan (@DrJimFan) October 5, 2023