My view is that LLMs are very “left brain”. There is a lot of BS written about brain assymetry but at the risk of making untrue claims, roughly speaking…
The left brain is more precise, short-range, and tool oriented, and the right brain is more fuzzy, long-range, pattern matching and directly observant of the environment through our senses.
The main speech area and motor control for our hands are close to each other in the left hemisphere and both are involved in how we manipulate our environment. But speech is not exclusive to the left hemisphere. If we speak in a carefully thought out way, its more left, if we use nonsense words, or write poems or songs it can be more right hemisphere generated.
The left brains reward system is mostly driven by dopamine. Dopamine produces a hit, but one that fades the more of it we generate. So the left brain gets tired and stops working so well after it has done too many hits. The right brain uses hormones derived from adrenaline, I am not sure of exact names. This does not have the fading hits effect of dopamine, which is why the right brain can remain alert for long periods of time. If a rabbit is feeding and keeping an eye out for predators, its the right brain that is continually monitoring the environment for a “pattern match” that tells it something unusual is occuring in those bushes over there and it should run.
There is a fascinating book about this called “The Master and His Emissary” which I found very illuminating. Its a tough read though, I think only got about 1/3 of the way through before giving up, just a very accademic style.
One of the main claims in this book is that we go through a right → left → right cycle when interacting with the world. The right observes the environment, tasks the left with performing some more tool oriented job, like responding with speech, then returns control to the right to continue running the overall show. Right is Master, Left is Emissary - its an analogy to a story written by Nietzsche about a master and servant and where the servant tries to take over. That is what the book is really about - that the modern world and digital technology has elevated the status of the left brain to the point it is starting to take over our entire culture and way of being.
Anyway, what I realized from this is that AI as we currently have it is very left brain. Its a bunch of tools that extend our left brain. If I code too long my left brain gets dopamined out. Wouldn’t it be nice if I could have a computer do the hard work for me?
When you talk to an LLM it does not say “Ohh Hi Rupert! I was missing you we haven’t talked in ages!”, because its not conscious for long periods of time and therefore aware of the passing of time in the same way that our right brain is. It hasn’t just been sitting there twiddling its thumbs since our last conversation, it dumped that to disk and went to process someone elses chat.
The left brain cannot do 2 conflicting things at once. The right brain can easily hold 2 conflicting ideas at the same time, one OR the other AND one AND the other all at the same time. So its possible to see how sequential token processing based on data generated by human left brains can be used to train LLMs and will converge to some approximation of the right answer. Not so easy to understand how to build an AI that works more like the right brain, what would determine success here? and what data would be used to train it?
The left brain approach has economic value - computers that can do our mental tasks for us. The right brain angle is much harder to understand the economic value of.
Current direction of travel in AI and recent successes will not produce consciousness. That will require a very different approach and I think we are barely started on it.