This is actually not comparable, because the brain has a much more complex structure that is _not_ learned, even at that level. The proteins and their structure are not a result of training. The fixed part for LMMs is rather trivial and is, in fact, not much for than MatMul which is very easy to understand - and we do. The fixed part of the brain, including the structure of all the proteins is enormously complex which is very difficult to understand - and we don't.
This is actually not comparable, because the brain has a much more complex structure that is _not_ learned, even at that level. The proteins and their structure are not a result of training. The fixed part for LMMs is rather trivial and is, in fact, not much for than MatMul which is very easy to understand - and we do. The fixed part of the brain, including the structure of all the proteins is enormously complex which is very difficult to understand - and we don't.