We know intelligence is possible because we exist. The human brain was created by a stupid process of just random mutation and selection. It was designed under

We know intelligence is possible because we exist. The human brain was created by a stupid process of just random mutation and selection. It was designed under ridiculous constraints like very restricted size and power consumption, that we don't have to deal with. And the brain really isn't that great. Signals travel through the brain about a million times slower than electrons through silicon. Neurons are large macroscale structures. Compare to our transistor technology that is approaching the limits of how small you can build things with atoms. These are just the hardware specs, I don't see any reason to believe the software is much better.