Simply said, the AI ones are an attempt to replicate the biological ones in data structures. At the beginning, there was the idea that if computers replicate brains as good as possible, they would also become “conscious” at some point. Hence the name “artificial intelligence”.
Of course, modern neural networks/AIs are extremely successful in replicating specific tasks that our brains can perform, but are still as far removed from consciousness as the automata of the 19th century (we don’t even understand how consciousness works in human brains yet).
Latest Answers