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this post was submitted on 23 Nov 2024
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LLMs are based on neural networks which are a massively simplified model of how our brain works. So you kind of can as long as you keep in mind they are orders of magnitude more simple.
At some point it becomes so “simplified” it’s arguably just not the same thing, even conceptually.
It is conceptually the same thing. A series of interconnected neurons with a firing threshold and weighted connections.
The simplification comes with how the information is transmitted and how our brain learns.
Many functions in the human body rely on quantum mechanical effects to function correctly. So to simulate it properly each connection really needs to be its own super computer.
But it has been shown to be able to encode information in a similar way. The learning the part is not even close.
Well... isn't the "learning part" precisely the point? I don't think anybody is excited about brains as "just" a computational device, rather the primary function of a brain is ... learning.
No, we are nowhere close to learning as the human brain does. We don't even really understand how it does at all.
The point is to encode solutions to problems that we can't solve with standard programming techniques. Like vision, speech recognition and generation.
These problems are easy for humans and very difficult for computers. The same way maths is super easy for computers compared to humans.
By applying techniques our neurones use computer vision and speech have come on in leaps and bounds.
We are decades from getting anything close to a computer brain.
Sorry then if I sound like a broken record but again, doesn't that mean that the analogy itself is flawed? If the goal remain the same but there is close to no explanatory power, even if we do get pragmatically useful result (i.e. it "works" in some useful cases) it's basically "just" inspiration, which is nice but is basically branding more than anything else.