[Link] Terry Pratchett begins formal process to end his life

6 ata 14 June 2011 04:53AM

http://blastr.com/2011/06/terry-pratchett-begins-fo.php

Another great mind that will be needlessly lost forever. :(

Open Thread, April 2011

5 ata 02 April 2011 06:43PM

It seems we have agreed that open threads will continue but that they will go in the Discussion section, so here's this month's thread.

Life hacks from the dark side

19 ata 29 March 2011 03:22AM

“So, Lone Starr, now you see that evil will always triumph, because good is dumb.”

— Dark Helmet

In a recent article, the unusually well-researched comedy site Cracked.com discussed “5 scientific reasons the dark side will always win,” including:

  • Clenching your fists and thinking evil thoughts can increase strength and willpower. (Hung & Labroo 2011, Schubert 2004, Gray 2010)
  • Particular “power poses” raise testosterone and lower cortisol levels (in both men and women) and increase feelings of power and tolerance for risk. (Carney et al. 2010)
  • Boosts in pride can allow you to work longer and harder on “effortful and hedonically negative” tasks. (Williams & DeSteno 2008)
  • Negative moods can decrease gullibility, increase persuasiveness and social influence, and improve the accuracy of eyewitness recollections. (Forgas 2007, Forgas 2008, Forgas et al. 2005)

Perhaps, then, it could be useful to intentionally cultivate a Mysterious Dark Side, or just ask yourself “What would Voldemort do?” once in a while (please do not murder anyone). I’m definitely going to be giving some of these a try; fist-clenching and power-posing are easy, and as a source of evil thoughts and pride, I already have a dark lord alter-ego I could channel when necessary (I’ll probably need to flesh out his character a bit more than I have so far).

The Cracked.com article mostly links to news stories, so, for your convenience, here are the original papers they refer to:

[Video] AI Box Experiment on BBC's "Look Around You"

20 ata 10 March 2011 06:36AM

I recently discovered that "Look Around You", a BBC TWO educational science-themed series from the 1980s1, had on its "Computers" episode a live-action AI Box Experiment, in which Bournemouth, what was at the time Britain's most advanced computer, was assigned to physically escape from a steel cage. For your convenience, I've excerpted the relevant clips from the episode. Watch and see how it turns out!


1 Note: The above description is a lie.

Study shows placebos can work even if you know it's a placebo

8 ata 24 December 2010 04:09AM

Placebo Effect Benefits Patients Even When They Knowingly Take a Fake Pill

This is a little bit disturbing. (A kind of belief in belief, perhaps? Like, "I know a placebo is where you take a fake pill but it makes you feel better anyway if you believe it's real medicine, so I'd better believe this is real medicine!")

Though it's too bad they (apparently) didn't have a third group who received a placebo that they didn't know was a placebo, to compare the effect size.

Edit: Here's the actual study. RolfAndreassen points out that its results may not actually be strong evidence for what is being claimed.

Link: "A Bayesian Take on Julian Assange"

8 ata 16 December 2010 03:20AM

From Nate Silver of FiveThirtyEight: A Bayesian Take on Julian Assange.

(Some) Singularity Summit 2010 videos now up

13 ata 15 December 2010 07:43PM

Videos of some of the talks and panel discussions (currently eight twelve of them) from this year's Singularity Summit are now online.

Michael Vassar:
The Darwinian Method

Eliezer Yudkowsky:
Simplified Humanism and Positive Futurism

Demis Hassabis:
Combining systems neuroscience and machine learning: a new approach to AGI

Shane Legg:
Universal measures of intelligence

Debate: Terry Sejnowski and Dennis Bray
Will we soon realistically emulate biological systems?

Jose Cordeiro:
The Future of Energy and the Energy of the Future

Panel: John Tooby, Ben Goertzel, Eliezer Yudkowsky, and Shane Legg
Narrow and General Intelligence

Ray Kurzweil:
The Mind and How to Build One

Gregory Stock:
Evolution of Post-Human Intelligence

Ramez Naam:
The Digital Biome

Ben Goertzel:
AI Against Aging

Dennis Bray:
What Cells Can Do That Robots Can't

Are we more akratic than average?

8 ata 15 November 2010 11:08PM

Akrasia is a topic that shows up on LW very frequently. Is there evidence that this is related to any of the traits that correlate with LW participation (high intelligence, non-neurotypical to some greater or lesser degree, inclination toward far thinking, anything else we know from the (old) survey or any other polls I'm forgetting)? Or is it just a problem in instrumental rationality that most or all people deal with from time to time, for which there is limited scientific understanding and therefore very little science underlying the mainstream advice, thus making it (seemingly) low-hanging fruit for rationalists?

If a tree falls on Sleeping Beauty...

83 ata 12 November 2010 01:14AM

Several months ago, we had an interesting discussion about the Sleeping Beauty problem, which runs as follows:

Sleeping Beauty volunteers to undergo the following experiment. On Sunday she is given a drug that sends her to sleep. A fair coin is then tossed just once in the course of the experiment to determine which experimental procedure is undertaken. If the coin comes up heads, Beauty is awakened and interviewed on Monday, and then the experiment ends. If the coin comes up tails, she is awakened and interviewed on Monday, given a second dose of the sleeping drug, and awakened and interviewed again on Tuesday. The experiment then ends on Tuesday, without flipping the coin again. The sleeping drug induces a mild amnesia, so that she cannot remember any previous awakenings during the course of the experiment (if any). During the experiment, she has no access to anything that would give a clue as to the day of the week. However, she knows all the details of the experiment.

Each interview consists of one question, “What is your credence now for the proposition that our coin landed heads?”

In the end, the fact that there were so many reasonable-sounding arguments for both sides, and so much disagreement about a simple-sounding problem among above-average rationalists, should have set off major alarm bells. Yet only a few people pointed this out; most commenters, including me, followed the silly strategy of trying to answer the question, and I did so even after I noticed that my intuition could see both answers as being right depending on which way I looked at it, which in retrospect would have been a perfect time to say “I notice that I am confused” and backtrack a bit…

And on reflection, considering my confusion rather than trying to consider the question on its own terms, it seems to me that the problem (as it’s normally stated) is completely a tree-falling-in-the-forest problem: a debate about the normatively “correct” degree of credence which only seemed like an issue because any conclusions about what Sleeping Beauty “should” believe weren’t paying their rent, were disconnected from any expectation of feedback from reality about how right they were.

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Is cryonics evil because it's cold?

19 ata 31 October 2010 11:59PM

There have been many previous discussions here on cryonics and why it is perceived as threatening or otherwise disagreeable. Even among LWers who are not signed up and don’t plan to, I’d say there’s a good degree of consensus that cryonics is reviled and ridiculed to a very unjustified degree. I had a thought about one possible factor contributing to its unsavory public image that I haven’t seen brought up in previous discussions:

COLD is EVIL.

Well, no, cold isn’t evil, but “COLD is EVIL/THREATENING/DANGEROUS/HARSH/LONELY/UNLOVING/SAD/DEAD” seems to be a pretty common set of conceptual metaphors. You see it in figures of speech like “cold-hearted,” “in cold blood,” “cold expression,” “icy stare,” “chilling,” “went cold,” “cold calculation,” “the cold shoulder,” “cold feet,” “stone cold,” “out cold.” (Naturally, it’s also the case that WARM is GOOD/COMFORTING/SAFE/SOCIAL/LOVING/HAPPY/ALIVE, though COOL and HOT sort of go in their own directions.) Associating something with coldness just makes it seem more threatening and less benevolent. And besides, being that “COLD is DEAD,” it’s pretty hard to imagine someone as not really dead if they’re in a container of liquid nitrogen at -135ºC. (Even harder if it’s just their head in there… but that’s a separate issue.) There is already a little bit of research on the effects of some of the conceptual metaphors of coldness and the way its emotional content leaks onto metaphorically associated concepts (“Cold and lonely: does social exclusion literally feel cold?”; “Experiencing physical warmth promotes interpersonal warmth.”; any others?).

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