Vern Poythress on AI

A friend asked me what I thought about this article from Vern Poythress: Artificially Intelligent. I wrote back:

Thank you for sharing the article. I really respect Dr. Poythress and I like a lot of the article. I don’t think he is exactly right in the two sections titled “The Ugly” and “Value of the Products”. In these, he claims that the model AI has of the world was imparted by human programmers. On the contrary, with regard to large language models and the newer reasoning models, human programmers are simply imparting a way to learn, a way to model reality. The model itself emerges from the data of the world (including data in which reasoning about the world is exemplified) in a way similar to how humans build a picture of the world through sensory and intellectual input. I agree that this is a simulation of human intelligence, but that doesn’t entail that it isn’t also a new kind of intelligence that isn’t human but rather something else entirely. If the opaque machinery inside of Searle’s room (Poythress mentions the Chinese Room thought experiment from the philosopher Searle) always produces the output that an intelligent speaker of Chinese would produce, then there is a functional parity between the room and a human speaker of Chinese. It is the “no true scotsman” fallacy to define intelligence in a way that computers can never meet the definition, even analogously.

The Five Senses and Metaphors for Understanding

Each of our senses seems to be connected to a primary metaphor for a type of understanding. Vision is good for making fine distinctions; it’s primarily about judging and classifying. “Can’t you see?” When God sees that things are “good” or “very good” in Genesis, he is judging them. Hearing is good for detecting problems / dissonances. “That doesn’t sound right to me.” “He and I are out of tune with each other.” Touch is good for prediction – we explore the contours of an object with our hand and predict its form and purpose – “I can feel my way through it.” Smell is good for memory; diesel brings my wife back to Germany, fish-markets bring me to Japan. Taste is good for value judgment, aesthetics, and other axiological concepts. Of course, we mix these and there are secondary metaphors for each sense. One can “see where this is going” which is about predicting a path. One can develop a “nose for things” which is about judgment.

I first considered this when thinking through digital compression. It is much easier to see lossy compression in an image or in video than to hear it in audio. The eye sees digital artifacts in a compressed image more readily than the ear hears artifacts in lower-quality audio. One of the key examples of prediction used by Numenta in its work on the human neocortex is a human’s ability to touch the handle of a coffee mug and predict the position of the rim.