This. And we've had the complete wiring diagram for its brain for over 20 years.
There's a wide-spread assumption that knowing the brain's connectivity will be sufficient to emulate its function, but there's so much about the underlying molecular and electrical properties of neurons that we know nothing about.
It's somewhat analogous to having a circuit diagram where the components are missing. Dropping in random components but preserving the wiring structure won't result in the same functionality.
There's a wide-spread assumption that knowing the brain's connectivity will be sufficient to emulate its function, but there's so much about the underlying molecular and electrical properties of neurons that we know nothing about.
It's somewhat analogous to having a circuit diagram where the components are missing. Dropping in random components but preserving the wiring structure won't result in the same functionality.