Continuing the discussion from The usage of Artificial Intelligence in the sitepoint community:
Natural Language is the ability to understand people. Expert Systems are separate technology.
ChatGPT does say it is a language model and it insists it is not an Expert System because it is not specialized yet it is vague about what ChatGPT is. I think ChatGPT is intentionally being vague to make it seem different.
I did not realize that the original discussion was closed until I was ready to post therefore I am creating this new discussion.