I've asked this elsewhere. Here goes again with some refinement:
So, {Possible AI} > {Evolved Intelligence} > {Human Intelligence}. What about {AI practically discoverable/inventable by near-term human civilization}? While possible AIs are practically boundless, the set of AIs that a few tens of thousands of researchers and supporting colleagues are likely to produce in our near-term reality is distinctly finite. (Though the "hull" of those points might subtend a large region of design space indeed.)
I'd say it is a superset of {Human Intelligence} (since humans can easily fabricate more human intelligences - it's so easy, we often start the process entirely by accident) and a subset of {Possible AI} (since there are almost certainly likely to be mind designs that are too complex, too alien, or too somethingelse to be near-term feasible.)
Whether {Near-Term Human-Inventible AIs} has a large vs small overlap with {Evolved Intelligences} is an interesting question, but not one for which I can think of any compelling arguments offhand.
Today's post, The Design Space of Minds-In-General was originally published on 25 June 2008. A summary (taken from the LW wiki):
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