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Comment author: wallowinmaya 24 October 2014 12:54:33PM 5 points [-]

Two words: Interindividual differences.

They also recommend 8-9 hours sleep. Some people need more, some people need less. The same point applies to many different phenomena.

Comment author: wallowinmaya 13 August 2014 01:26:24PM 0 points [-]

I think Bostrom puts it nicely in his new book "Superintelligence":

A colleague of mine likes to point out that a Fields Medal (the highest honor in mathematics) indicates two things about the recipient: that he was capable of accomplishing something important, and that he didn't.

Comment author: wallowinmaya 05 August 2014 06:27:46PM 4 points [-]

I translated the essay Superintelligence and the paper In Defense of posthuman Dignity by Nick Bostrom into German in order to publish them on the blog of GBS Schweiz.

He thanked me by sending me a signed copy of his new book "Superintelligence". Which made me pretty happy.

Comment author: stared 23 March 2014 11:24:42AM 0 points [-]

This link does not work for me (it redirects to my event list). I am not sure if it is because of privacy settings or anything else? In any case: what is its full name as it appears on FB?

Comment author: wallowinmaya 23 March 2014 07:45:01PM 1 point [-]

I changed the privacy settings. Link should work now.

Comment author: stared 22 March 2014 07:43:46PM *  1 point [-]

I am interested, but not sure if I will be available on that date (40%?). Do you want to create a FB event? From my experience as an organizer of various stuff it works for seeing who is interested; of course it will attract more newbies and casual readers (I am in this category: up to date, my most serious interaction with LW is this post: http://stats.stackexchange.com/questions/28067/entropy-based-refutation-of-shalizis-bayesian-backward-arrow-of-time-paradox/28634#28634).

Comment author: wallowinmaya 22 March 2014 10:36:26PM 1 point [-]
Comment author: jkadlubo 22 March 2014 06:15:19PM *  2 points [-]

On a general level me and tkadlubo are interested, but not this time. AFAWK there are just over a dozen Polish LWers, scattered around the country and that makes any meetup difficult.

We are going to the Berlin Meetup in 3 weeks, Maybe see you there?

Comment author: wallowinmaya 22 March 2014 10:28:22PM 0 points [-]

Cool, yeah, I'm going to the Berlin Meetup. See you there!

Meetup : First LW Meetup in Warsaw

3 wallowinmaya 22 March 2014 04:41PM

Discussion article for the meetup : First LW Meetup in Warsaw

WHEN: 30 March 2014 03:00:00PM (+0100)

WHERE: Cafe Kulturalna, Plac Defilad 1, 00-901 Warszawa

As far as I can tell, there never has been a Lesswrong meetup in Warsaw, although Warsaw has almost 2 million inhabitants.

I'm currently visiting my girlfriend in Warsaw and we would like to meet folks who are also interested in Lesswrong and related topics.

Regarding the content and structure of the meetup: I would suggest that at first everyone proposes some discussion topics he or she is interested in (e.g. epistemic rationality, effective altruism, far future/FAI, practical life tips, etc.) and then we choose the most popular ones. Simple socializing and getting to know each other is of course also great!

Please leave a comment if you're thinking about attending or are interested in a LW meetup in Warsaw, even if you can't attend this one.

And remember, (almost) everyone is welcome, especially newbies!

(In case you can't find the place or something, here's our number: 0048 693 603 770)

ETA: The meetup will take place at 15:00 PM, local time. 

Link to Facebook-Event

Discussion article for the meetup : First LW Meetup in Warsaw

Comment author: SaidAchmiz 21 January 2014 05:19:13AM 26 points [-]

making physical backups of data

Oh boy, is this ever a good example.

I used to work retail, selling and repairing Macs and Mac accessories. When I'd sell someone a computer, I'd tell them — no, beg them — to invest in a backup solution. "I'm not trying to sell you anything!", I'd say. "You don't have to buy your backup device from us — though we'd be glad to sell you one for a decent price — but please, get one somewhere! Set it up — heck, we'll set it up for you — and please... back up! When you come to us after your hard drive has inevitably failed — as all hard drives do eventually, sure as death or taxes — with your life's work on it, you'll be glad you backed up."

And they'd smile, and nod, and come back some time later with a failed hard drive, no backup, and full of outrage that we couldn't magic their data back into existence. And they'd pay absurd amounts of money for data recovery.

Back up your data, people. It's so easy (if you've got a Mac, anyway). The pain of losing months or years of work is really, really, really painful.

Comment author: wallowinmaya 05 February 2014 11:16:51PM 0 points [-]

You got me kinda scared. I just use Evernote or wordpress for all my important writing. That should be enough, right?

Comment author: wallowinmaya 03 February 2014 01:19:03PM 0 points [-]

Great post of course.

If it took a mutant to do monstrous things, the history of the human species would look very different. Mutants would be rare.

Maybe I'm missing something, but shouldn't it read: "Mutants would not be rare." ? Many monstrous things happened in human history, so if only mutants could do evil deeds, there would have to be a lot of them. Furthermore, mutants are rare, so no need for the subjunctive "would".

Comment author: gwern 10 January 2014 03:00:11AM 13 points [-]

Meta-analysis on cognitive effects of modafinil (my bachelor thesis)

Well, meta-analyses certainly are an area of interest to me, and I was disappointed in 2012 by "Cognition Enhancement by Modafinil: A Meta-Analysis" (Kelley et al 20120) which used only 3 studies, and so was not very informative. A new meta-analysis would be great. But... I read quickly through it, and I saw no meta-analysis. Just a literature review. What's with the post title?

Modafinil significantly improved performance in 26 out of 102 cognitive tests, but significantly decreased performance in 3 cognitive tests.

Nitpick: I really hate this use of 'significantly' and I ban it from my own writing. Is this referring to effect sizes or p-values?

Notably, modafinil appears to have detrimental effects on mental flexibility. Although 4 studies employed the Intra/Extradimensional Set Shift task (ID/ED), no performance improvements could be detected. Performance was even reduced in a study by Randall et al. (2004). Furthermore, Müller et al. (2012) found that subjects on modafinil had lower flexibility scores in the Abbreviated Torrance task for adults.

Eh. Absence of improvement != damage. Randal 2004 didn't find a statistically-significant decrease (and it's not clear whether it should, given that it reports 25 datasets for 3 groups, so hunting for decreases incurs worries about multiplicity). And I have to point out, as far as Müller et al 2012 goes, the decrease didn't reach p<0.05 (just 0.053), and if you're willing to accept just trending, then you should also be accepting the increase in the GEFT/Group Embedded Figures Task (p=0.08).

How important are these observations...? Well, as you found out, it can be hard to compare or meta-analyze psychology studies since studies may cover the same topic but use different sets of tests, frustrating the most obvious approach 'just univariate meta-analyze everything!'

Reprinted from Baranski et al. (2004) without permission.


Comment author: wallowinmaya 10 January 2014 07:14:24PM *  5 points [-]

But... I read quickly through it, and I saw no meta-analysis. Just a literature review. What's with the post title?

You're right. I don't remember why I wrote "meta-analysis". (Probably because it sounds fancy and smart). I updated the title.

Is this referring to effect sizes or p-values?


Eh. Absence of improvement != damage.


...Randal 2004 didn't find a statistically-significant decrease...

No. In Randall et al. (2004) participants in the 200 mg modafinil condition made significantly more errors (p<0,05) in the Intra/Extradimensional Set Shift task than participants in the placebo and the 100 mg modafinil condition. (The 200 mg group made on average around 27 errors. The 100 mg group around 14. The control group around 17 errors.)

Actually, you linked to a different study. The results can be found in the complete study I linked to. I can upload it if you want to see it yourself.

Reprinted from Baranski et al. (2004) without permission.

Every single graphic in this whole thing is reprinted without permission, to tell the truth. (Is this a problem?)

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