I thought it was clear that: A- For Friendly A.I, I meant modelling a human via a direct simulation of a human brain (or at least the relevant parts) idealised in such a way as to give the results we would want B- I DID NOT INTEND TO REDUCE THE PROBLEM.
A: What is the difference between this, and just asking the human brain in the first place? The whole point of the problem is that humans do not, actually, know what we want in full generality. You might as well implement a chess computer by putting a human inside it and asking, at every ply, "Do you think this looks like a winning position?" If you could solve the problem that way you wouldn't need an AI!
B: Then what was the point of your post?
A stub on a point that's come up recently.
If I owned a paperclip factory, and casually told my foreman to improve efficiency while I'm away, and he planned a takeover of the country, aiming to devote its entire economy to paperclip manufacturing (apart from the armament factories he needed to invade neighbouring countries and steal their iron mines)... then I'd conclude that my foreman was an idiot (or being wilfully idiotic). He obviously had no idea what I meant. And if he misunderstood me so egregiously, he's certainly not a threat: he's unlikely to reason his way out of a paper bag, let alone to any position of power.
If I owned a paperclip factory, and casually programmed my superintelligent AI to improve efficiency while I'm away, and it planned a takeover of the country... then I can't conclude that the AI is an idiot. It is following its programming. Unlike a human that behaved the same way, it probably knows exactly what I meant to program in. It just doesn't care: it follows its programming, not its knowledge about what its programming is "meant" to be (unless we've successfully programmed in "do what I mean", which is basically the whole of the challenge). We can't therefore conclude that it's incompetent, unable to understand human reasoning, or likely to fail.
We can't reason by analogy with humans. When AIs behave like idiot savants with respect to their motivations, we can't deduce that they're idiots.