We aren't in the 18th century and we know a lot more about the topic. But I can't see anything that parallels physical limitations of mechanical contraptions. S

We aren't in the 18th century and we know a lot more about the topic. But I can't see anything that parallels physical limitations of mechanical contraptions. Sensors can be improved, stimuli processing can be improved. Do you know something about the brain that makes it impossible to replicate its functionality technologically?