Strong upvote for the great question—I don’t have a definite answer for you, and would potentially be willing to concede the “universality” of human brains by your definition. I’m not sure how much that changes anything, though. For all practical purposes, I think we’re in agreement that, say, most complex computational problems can’t be solved by humans within a reasonable timeframe, but could be solved by a sufficiently large superintelligence fairly quickly.
Strong upvote for the great question—I don’t have a definite answer for you, and would potentially be willing to concede the “universality” of human brains by your definition. I’m not sure how much that changes anything, though. For all practical purposes, I think we’re in agreement that, say, most complex computational problems can’t be solved by humans within a reasonable timeframe, but could be solved by a sufficiently large superintelligence fairly quickly.