I don't really mean anything special by intelligence, but let's flatter ourselves that humans are born with some measure of it. I personally find it more likely

I don't really mean anything special by intelligence, but let's flatter ourselves that humans are born with some measure of it. I personally find it more likely than not that our particular form of intelligence is able to then _learn_ various rules of logical inference as a kind of metapattern. When I say 'emulate' I mean that we can, if we want, sit down with a pencil and paper and _force_ ourselves to evaluate things exactly via these rules, even if we don't instinctively follow them (or do so fuzzily). Obviously I could very easily be wrong, and we could possess hard coded rules of logical inference which form part of the basis for all the other things we do that you might call intelligence. But I'm not sure that anyone should claim "a general artificial intelligence would require a logical inference engine similar to Prolog".