Most serious people know that human-level AI is possible in principle, because it is possible in humans. The only alternative would be to posit some nonsense spiritual explanation for intelligence. There are numerous predictions that someone will do it soon (not saying I agree with them, but they exist, and are occasionally made by serious people). Incremental progress has been ongoing in AI for years as well.<p>I can&#x27;t really imagine how they could be more similar.