Assuming 3. Maybe in order to reproduce human level consciousness one would need to treat at least most human cells as neurons, and reconstruct all the diversity of neuron types and their signalling mechanisms.
If human consciousness is reproducible, maybe we will long underestimate the depth and diversity it uses to model reality the way it does.
If human consciousness is reproducible, maybe we will long underestimate the depth and diversity it uses to model reality the way it does.