I will consider this claim, if you can show my how it is really different.
Torture vs. Dust Specks attempts to illustrate scope insensitivity in ethical thought by contrasting a large unitary disutility against a fantastically huge number of small disutilities. And I really do mean fantastically huge: if the experiences are ethically commensurate at all (as is implied by most utilitarian systems of ethics), it's large enough to swamp any reasonable discounting you might choose to perform for any reason. It also has the advantage of being relatively independent of questions of "right" or "deserving": aside from the bare fact of their suffering, there's nothing about either the dust-subjects or the torture-subject that might skew us one way or another. Most well-reasoned objections to TvDS boil down to finding ways to make the two options incommensurate.
Your Ten Very Committed Rapists example (still not happy about that choice of subject, by the way) throws out scope issues almost entirely. Ten subjects vs. one subject is an almost infinitely more tractable ratio than 3^3^3^3 vs. one, and that allows us to argue for one option or another by discounting one of the options for any number of reasons. On top of that, there's a strong normative component: we're naturally much less inclined to favor people who get their jollies from socially condemned action, even if we've got a quasi-omniscient being standing in front of us and saying that their suffering is large and genuine.
Long story short, about all these scenarios have in common is the idea of weighing suffering against a somehow greater suffering. Torture vs. Dust Specks was trying to throw light on a fairly specific subset of scenarios like that, of which your example isn't a member. Nozick's utility monster, by contrast, is doing something quite a lot like you are, i.e. leveraging an intuition pump based on a viscerally horrible utilitarian positive. I don't see the positive vs. negative utility distinction as terribly important in this context, but if it bothers you you could easily construct a variant Utility Monster in which Utilizilla's terrible but nonfatal hunger is temporarily assuaged by each sentient victim or something.
Torture vs. Dust Specks attempts to illustrate scope insensitivity in ethical thought by contrasting a large unitary disutility against a fantastically huge number of small disutilities
Your Ten Very Committed Rapists example (still not happy about that choice of subject, by the way) throws out scope issues almost entirely. Ten subjects vs. one subject is an almost infinitely more tractable ratio than 3^3^3^3 vs. one, and that allows us to argue for one option or another by discounting one of the options for any number of reasons.
I do sincerely apologize...
The device allows for certain issues like slavery and income distribution to be determined beforehand. Would one vote for a society in which there is a chance of severe misfortune, but greater total utility? e.g, a world where 1% earn $1 a day and 99% earn $1,000,000 vs. a world where everyone earns $900,000 a day. Assume that dollars are utilons and they are linear (2 dollars indeed gives twice as much utility). What is the obvious answer? Bob chooses $900,000 a day for everyone.
But Bob is clever and he does not trust himself that his choice is the rational choice, so he goes into self-dialogue to investigate:
In the insurance industry, purchasing insurance comes with a price. Perhaps 1.5% premium of the cost of reimbursing you for your house that may burn down. The actuaries have run the probabilities and determine that you have a 1% chance that your house will burn down. Assume that all dollar amounts are utilons across all assets. Bob once again is a rational man. Every year Bob is chooses to pay 1.5% in premium even though his average risk is technically a 1% loss, because Bob is risk adverse. So risk adverse that he prefers a world in which he has less wealth, the .5% went to the insurance companies making a profit. Once again Bob questions his rationality on purchasing insurance:
Eliezer's post on Torture vs. Dust Specks [Here] has generated lots of discussion as well as what Eliezer describes as interesting [ways] of [avoiding] the question. We will do no sort of thing in this post, we will answer the question as intended; I will interpret that eye specks is cumulatively greater suffering than the suffering of 50 years.
My PVG tells me that I would rather have a speck in my eye, as well as the eye's of 3^^^3 people, than to risk to have one (perhaps me) suffer torture for 50 years, even though my risk is only 1/(3^^^3) which is a lot less than 50 years (Veil of ignorance). My PVG is what I will maximize, and doing so is the definition of instrumental rationality.
In short, the rational answer is not TORTURE or SPECKS, but depends on what your preference, values and goals are. You may be one of those whose preference is to let that one person feel torture for 50 years, as long as your actions that steer the future toward outcomes ranked higher in your preferences, you are right too.
Correct me if I am wrong but I thought rationality did not imply that there were absolute rational preferences, but rather rational ways to achieve your preferences...
I want to emphasize that in no way did I intend for this post to declare anything. And want to thank everyone in advance for picking apart every single word I have written. Being wrong is like winning the lottery. I do not claim to know anything, the assertive manner in which I wrote this post was merely a way to convey my ideas, of which, I am not sure off.