Tell me how this and your brain are not abstract models of the same general concept.
The brain is organic and plastic (in the sense of being mutable), with connections not being fixed in stone
It's a living developing thing that does not remain constant
Circuit boards remain as they are
I can whip out a laptop I haven't used in 10 years and it will execute the same things the same way, meanwhile your brain today is distinct from your brain yesterday
But even if you argue that plasticity can be simulated or that neural nets mutate too, brains are living organisms encased in self-generated teleological action, not "thinking machines"
Computers are deterministic symbol manipulators with no ends, no awareness, no self-initiated behavior, no womb, and no meaning
Computation is rule-bound symbol manipulation, yet neurons don't operate on symbols, they don't have syntax, semantics, a defined instruction set, or machine-state formalism. Whatever neurons do is biological causation
A computer has no metabolism, no self-preservation, no value hierarchy. A computer only does what it is caused to do from external inputs, yet a brain's activity is self-generated, end-directed, and teleological
You cannot give a machine needs, desires, cares, a point of view, values, first-person awareness, and ends of its own, because those are features of life
The bottom line is that AGI is incoherent because the concept requires attributing a teleological consciousness to a system whose ontology completely and entirely excludes it