Comment by random3

Cortical Labs has been doing work in this area. They had a Doom demo a while ago. I think it's a matter of tradeoffs. Perhaps you'd have biological version as a versatile all-around thing, but many tasks don't require that so likely the tin variants are more durable for many tasks. Also, in terms of reasoning, the brain bandwidth is very low and high latency so there are advantages to silicon chips there.

It's interesting to learn actuators are "behind". I kept seeing cool stuff in the 3D printing space and thought there's a lot of progress. I'd love to learn more.