Comment author: Jiro 14 May 2015 08:25:41PM *  5 points [-]

Although technically any AI has a utility function, the usual arguments about the failings of utility functions don't apply to unusual utility functions like the type that may be more easily described using other paradigms.

For instance, Google Maps can be thought of as having a utility function: it gains higher utility the shorter the distance is on the map. However, arguments such as "you can't exactly specify what you want it to do, so it might blackmail the president into building a road in order to reduce the map distance" aren't going to work, because you can program Google Maps in such a way that it never does that sort of thing.

Comment author: Plasmon 14 May 2015 08:46:36PM *  6 points [-]

However, arguments such as "you can't exactly specify what you want it to do, so it might blackmail the president into building a road in order to reduce the map distance"

The reason that such arguments do not work is that you can specify exactly what it is you want to do, and the programmers did specify exactly that.

In more complex cases, where the programmers are unable to specify exactly what they want, you do get unexpected results that can be thought of as "the program wasn't optimizing what the programmers thought it should be optimizing, but only a (crude) approximation thereof". (an even better example would be one where a genetic algorithm used in circuit design unexpectedly re-purposed some circuit elements to build an antenna, but I cannot find that reference right now)

Comment author: Richard_Loosemore 14 May 2015 03:09:01PM *  3 points [-]

i agree with the sentiment behind what you say here.

The difficult part is to shake ourselves free of any unexamined, implicit assumptions that we might be bringing to the table, when we talk about the problem.

For example, when you say:

And this is the reason why we should be worried about an AI with a poorly made utility function

... you are talking in terms of an AI that actually HAS such a thing as a "utility function". And it gets worse: the idea of a "utility function" has enormous implications for how the entire control mechanism (the motivations and goals system) is designed.

A good deal of this debate about my paper is centered in a clash of paradigms: on the one side a group of people who cannot even imagine the existence of any control mechanism except a utility-function-based goal stack, and on the other side me and a pretty large community of real AI builders who consider a utility-function-based goal stack to be so unworkable that it will never be used in any real AI.

Other AI builders that I have talked to (including all of the ones who turned up for the AAAI symposium where this paper was delivered, a year ago) are unequivocal: they say that a utility-function-and-goal-stack approach is something they wouldn't dream of using in a real AI system. To them, that idea is just a piece of hypothetical silliness put into AI papers by academics who do not build actual AI systems.

And for my part, I am an AI builder with 25 years experience, who was already rejecting that approach in the mid-1980s, and right now I am working on mechanisms that only have vague echoes of that design in them.

Meanwhile, there are very few people in the world who also work on real AGI system design (they are a tiny subset of the "AI builders" I referred to earlier), and of the four others that I know (Ben Goertzel, Peter Voss, Monica Anderson and Phil Goetz) I can say for sure that the first three all completely accept the logic in this paper. (Phil's work I know less about: he stays off the social radar most of the time, but he's a member of LW so someone could ask his opinion).

Comment author: Plasmon 14 May 2015 07:31:38PM *  3 points [-]

me and a pretty large community of real AI builders who consider a utility-function-based goal stack to be so unworkable that it will never be used in any real AI.

Just because the programmer doesn't explicitly code a utility function does not mean that there is no utility function. It just means that they don't know what the utility function is.

Comment author: Plasmon 06 April 2015 02:29:50PM 1 point [-]

Applause!

I like the minimalist UI - compare with far more cluttered sites like memrise and fluentu .

Comment author: [deleted] 27 March 2015 10:30:56AM 0 points [-]

No, today's good theistic scientists, to the extent that they still exist, are precisely those who have stopped to take religion seriously as a scientific hypothesis.

That is extremely obvious and something of the first thing I said in this article is that you mustn´t make a religious belief into a premise for science. Of course you can´t mix up scientific work with religion.

Comment author: Plasmon 27 March 2015 03:24:40PM *  1 point [-]

you mustn´t make a religious belief into a premise for science

I strongly disagree. If religion were true, that would be exactely what you should do.

Of course you can´t mix up scientific work with religion.

Why?

That statement is widely accepted today, but it is only widely accepted because virtually all attempts to do so have failed.

What happened is the following: people did try to base science on religion, they did make interesting predictions based on religious hypotheses. By elementary Bayesian reasoning, if an observation would be evidence for a religion, not observing it is evidence (though possibly weak evidence) against that religion. That is hard to accept for religious people, thus they took the only remaining option : they started pretending that religion and science are somehow independent things.

Imagine - just imagine! - that Decartes did find a soul receiver in the pineal gland. Imagine that Newton did manage to find great alchemical secrets in the bible. Imagine! If that would have happened, do you think anyone would claim that "of course you can´t mix up scientific work with religion" ?

Comment author: [deleted] 26 March 2015 09:44:46PM 1 point [-]

He was agnostic most part of his life. But you are right that at one point in his life he openly declared himself an atheist. I remembered wrong. Heisenberg at the other hand was openly a theist. If you can only think of Francis Collins, maybe you shouldn´t base all your beliefs on just one person?

Wikipedia on Schrödinger:

Despite being raised in a religious household, he called himself an atheist. However, he had strong interests in Eastern religions, pantheism and used religious symbolism in his works. He also believed his scientific work was an approach to the godhead, albeit in a metaphorical sense.

Comment author: Plasmon 27 March 2015 06:46:51AM 0 points [-]

If you can only think of Francis Collins

I did say the only relatively well-known one, not the only one. Would you prefer if I used as an example Frank Tipler or Immanuel Velikovsky, both of whom make up exceedingly implausible hypotheses to fit their religious worldview, and are widely considered pseudoscientist because of that? Or Marcus Ross, who misrepresented his views on the age of the earth in order to get a paleontology phd?

No, today's good theistic scientists, to the extent that they still exist, are precisely those who have stopped to take religion seriously as a scientific hypothesis.

he had strong interests in Eastern religions

Being interested in religion does not a theist make. Nor does merely acknowledging the possibility of an unspecified creator entity, the simulation hypothesis is not theism.

Comment author: [deleted] 26 March 2015 09:24:11PM 1 point [-]

Why did you mention him then? Why not mention Erwin Schrödinger or Heisenberg for example?

Comment author: Plasmon 26 March 2015 09:34:28PM *  2 points [-]

Why did you mention him then?

He is the only well-known example of a modern theistic scientist that I can think of.

Why not mention Erwin Schrödinger or Heisenberg for example?

Both are dead, and I am not familiar with their thoughts on religion.

I looked up Schrödinger on wikipedia, and there it is : "Despite being raised in a religious household, he called himself an atheist.".

Comment author: [deleted] 26 March 2015 08:58:51PM 0 points [-]

I don´t fully agree though. There many scientists today whom are also theists. What do you base that last sentence on? As for Newton trying to extract information from the bible, as far as I remember this was in his senior years when he started with numerology. He kept this obscure hobby quite secret and separated from his scientific work as far as I know.

Comment author: Plasmon 26 March 2015 09:14:16PM *  0 points [-]

obscure hobby quite secret and separated from his scientific work

To someone who truly takes a certain religion seriously as a scientific hypothesis, attempting to extract non-obvious information from that religion's holy book is scientific work! The book was supposedly written by, or inspired by, an omnipotent being. How could they not expect to find important clues in there?

What do you base that last sentence on?

The complete and utter lack of modern theistic scientists looking for a soul-body communication organ, to name just one example.

There many scientists today whom are also theists.

People such as Francis Collins, who claimed to have converted to christianity after seeing a three-part frozen waterfall, which he interpreted as a sign of the holy trinity? Even though 3 is a significant number in more religions than I can be bothered to count ? No, such people are not worth mentioning in a serious discussion of this subject.

Comment author: [deleted] 26 March 2015 08:25:11PM *  1 point [-]

You are right :) I was amused when I first heard about his theories regarding the soul. We have to remember though, that he was philosopher and not a real doctor or a scientist in the modern meaning. Besides, not all old theistic scientists based their science on religious premises.

Comment author: Plasmon 26 March 2015 08:48:51PM 0 points [-]

Besides, not all old theistic scientists based their science on religious premises.

Very true. They would hardly have made much progress if they did!

Many tried to do it though. Another example is Isaac Newton, who tried to extract scientific information from the bible.

My point here is not that their conclusions were wrong, but that their attitude towards religion was a scientific one, an attitude rarely seen in today's theists.

Comment author: Plasmon 26 March 2015 08:20:26PM *  3 points [-]

I see you mention Rene Descartes. He believed in the existence of souls, and, taking that hypothesis seriously, he concluded there has to be a way for the soul to send signals to the body. He went looking for an organ that might fulfil this purpose, and concluded that it is the pineal gland.

This conclusion is false, the true function of the pineal gland is known today, but it illustrates a point : the old theistic scientists tended to take religion seriously, they viewed it as a valid scientific hypothesis whose implications in the real world could be studied. In that sense, they were wholly unlike modern-day theists who all too often seek refuge in unfalsifyability.

Comment author: TobyBartels 17 March 2015 06:04:16AM 1 point [-]

No, he's certainly not completely wrong, but he's bringing up irrelevant complications and missing the main point. Quantum vs classical has nothing to do with it, for example.

Comment author: Plasmon 17 March 2015 06:23:24AM 4 points [-]

The fact that quantum mechanics conserves energy is stronger evidence for the hypothesis that reality conserves energy than the fact that classical mechanics conserves energy. He is saying "our best model of reality conserves energy" which is very relevant.

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