Search found 7428 matches

by Zamfir
Fri Mar 23, 2018 1:53 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 26077

Re: Quantum Question

Yes - agreed. But this works classically too. Sure, I was only talking about a classical system here. I get the impression that some of phorests questions were not just about quantum effects. In particular, this part: That is as I expect, but then, I also expect it of any given state, not only low-...
by Zamfir
Thu Mar 22, 2018 8:43 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 26077

Re: Quantum Question

Let's take the standard toy of thermodynamics, a closed box with gas molecules. Let's say that the molecules move perfectly deterministic, and let's say there are two kinds of molecules, split 50-50. Box 1 has a truly random chosen state. You expect, almost-certain, that the 2 kinds of molecules are...
by Zamfir
Thu Mar 22, 2018 5:58 pm UTC
Forum: News & Articles
Topic: The Thread To Remind Me We're Living In The Future
Replies: 1932
Views: 400673

Re: The Thread To Remind Me We're Living In The Future

Isn't it a tad early to decide that visibility was bad? The camera images show that visibility was bad for this camera, but that's hardly the relevant standard. it could just as well mean that the camera was not suitable for the circumstances. We all know how disappointing cameras can perform under ...
by Zamfir
Thu Mar 22, 2018 6:41 am UTC
Forum: Serious Business
Topic: Will there be a large US recession in the next 5 years?
Replies: 21
Views: 10986

Re: Will there be a large US recession in the next 5 years?

I think quarterly growth data works the other way round. You regularly see peaks up and down, with high peaks typically followed by deep downs. Because growth rate is a derivative, and therefore multiplies noise in the data. Just as an example, a quarter can include a workday or weekend day more or ...
by Zamfir
Tue Mar 20, 2018 3:20 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 4622
Views: 722921

Re: The Darker Side of the News

I suspect that a lot of these claims about super-targetted super effective manipulation are just bullshit. It's advertisement people selling themselves, in an area where performance is notoriously hard to measure, with the added buzz of New Technology. That's the bind that Facebook is in. They have ...
by Zamfir
Mon Mar 19, 2018 8:09 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 4622
Views: 722921

Re: The Darker Side of the News

It depends on how scummy you think institutions are. If you are ok with this, does any level of white collar criminality matter? Like how is this any different than the Equifax Breach? The difference is that the Trump campaign did the same thing as Facebook itself, namely send targeted ads based on...
by Zamfir
Sun Mar 18, 2018 8:19 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 4622
Views: 722921

Re: The Darker Side of the News

I am not quite sure what the scandal is here, exactly. This is Facebook's business model, right? They know all this stuff, you pay them money, they do creepy manipulative advertisement for you. It's not a secret, it s their official business model. Apparently, the Trump campaign didn't have enough m...
by Zamfir
Mon Mar 05, 2018 1:31 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 13555

Re: Magitech society needs a heat engine

Yes, that's the basic idea. I was wondering, how would this question look like to someone who doesn't have our hindsight knowledge of thermodynamic theory? Nor the bag of tricks that we know will eventually be invented to make engines work well?Let's say, the practical and theoretical knowledge of 1...
by Zamfir
Fri Mar 02, 2018 5:45 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 13555

Re: Magitech society needs a heat engine

I understand that energy part, that you can't get more kinetic energy out of an expanding gas than the thermal energy difference. But what I don't understand is that in the ideal gas law, PV = nRT, heat capacity (the part that controls the thermal energy for a given T) does not appear. Theres two i...
by Zamfir
Sun Feb 25, 2018 11:08 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 13555

Re: Magitech society needs a heat engine

Maximum carnot efficiency depends on the ratio of temperatures, not the difference. Going entirely 'cold' can, in principle, give you any kind of efficient you want. Going 'down' to the realm of liquid air is comparable (for carnot efficiency) to going up to 800C or so. That's beyond even modern cra...
by Zamfir
Sun Feb 25, 2018 9:54 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 4622
Views: 722921

Re: The Darker Side of the News

Is it currently a religious conflict, nationalist, or just various warlords trying to prove who is the biggest and baddest? Because honestly? I think this is one of those conflicts that can be perfectly described by "Dawn of the Peck", one of the Thanksgiving episodes of Bob's Burgers. Th...
by Zamfir
Sat Feb 24, 2018 2:27 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 13555

Re: Magitech society needs a heat engine

A big, fundamental problem with 19th century steam engines was pressure. Basically, the atmospheric boiling point of water is too low to create an efficient engine, but reliable high-pressure piping and vessels were really beyond the manufacturing and material knowledge of those days. Not just the e...
by Zamfir
Thu Feb 22, 2018 11:09 am UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 8714
Views: 889350

Re: Trump presidency

Even if this works, even if the teacher isn't the first one hit and does recognise the shooting when it starts and does get his or her gun into action and manages to James Bond it Yeah, James-Bonding all the way is not a good approach for ordinary people. In the last installments, even Bond himself...
by Zamfir
Thu Feb 22, 2018 10:11 am UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 8714
Views: 889350

Re: Trump presidency

School shootings are major tragedies where they happen but they cause a trivially low deaths count per year. It would take a negligible rate of accidents from teachers' guns to overcome any possible good this could do. That works directions, doesn't it? Gun control advocates want to take away Edgar...
by Zamfir
Fri Feb 16, 2018 6:44 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1955: "Robots"
Replies: 25
Views: 6050

Re: 1955: "Robots"

This makes me wonder - has Boston Dynamics ever made a product, at all? They have been making YouTube movies since I can remember, before YouTube existed probably. Does anything ever happen with those prototypes, or they just move on to the next prototype?
by Zamfir
Thu Feb 15, 2018 4:36 pm UTC
Forum: Serious Business
Topic: Ideal immigration policy
Replies: 112
Views: 33993

Re: Ideal immigration policy

Well, what is it that distinguishes one nation from another?
borders, with a different government on each side
by Zamfir
Tue Feb 13, 2018 6:40 pm UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 8714
Views: 889350

Re: Trump presidency

You thought you were joking, right? http://www.sparknotes.com/mindhut/2013/10/23/all-of-the-hobbit-told-in-emoji# https://www.buzzfeed.com/jarrylee/one-emoji-to-rule-them-all The balrog is nicely done in the second link: https://img.buzzfeed.com/buzzfeed-static/static/2015-04/24/16/enhanced/webdr07/...
by Zamfir
Mon Feb 12, 2018 8:35 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

Ucim, are you seriously suggesting that you would, in that situation, claim the right to remain silent in order not to incriminate yourself, and that your wife should (or would) accept that without further consequences?
by Zamfir
Mon Feb 12, 2018 7:14 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

Ninjaed: Orthogon, I guess we'll have to disagree on this. As I see it, criminal courts have exceptional power of punishment, they declare sentences that would be severe crimes in any other context. That is why they also have to meet exceptional standards to do so. Standards that do not even apply t...
by Zamfir
Sat Feb 10, 2018 7:19 pm UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 8714
Views: 889350

Re: Trump presidency

Actually, you pronounce it g as in 'gif'.

In Dutch, that's pronounced as the Ch in Loch. For some reason, that option never pops up in anglophone discussions about gif-pronunciation.
by Zamfir
Fri Feb 09, 2018 6:46 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

Ucim, what is wrong with the standard used here? The newspaper appears to have done the source-checking legwork . There is a second, seemingly independent accusation that tells a similar story. The source of the accusation has no obvious interest in lying, the story is coherent and it's verifiable c...
by Zamfir
Thu Feb 08, 2018 6:20 pm UTC
Forum: Science
Topic: Expansion in the long... (very) long term
Replies: 9
Views: 4228

Re: Expansion in the long... (very) long term

Hmm, that's a good question. I think that depends whether the stress-energy tensor is semidefinite.
by Zamfir
Thu Feb 08, 2018 5:52 pm UTC
Forum: News & Articles
Topic: In other news... (humorous news items)
Replies: 15151
Views: 2663602

Re: In other news... (humorous news items)

Your pdf says that women over 65 show much less fatalities than men over 65? 43% of fatalities-over-65 for 59% of the population-over-65, so about half the rate of the men over 65. And that doesn't account for the grouping error - the women over 65 are on average much older than the men over 65, whi...
by Zamfir
Thu Feb 08, 2018 4:44 pm UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 10065

Re: How did a discontinued foreign coin end up in my car?

Nono, He Himself clearly says:
Neither I nor My Father have been to France
by Zamfir
Thu Feb 08, 2018 2:42 pm UTC
Forum: Science
Topic: Expansion in the long... (very) long term
Replies: 9
Views: 4228

Re: Expansion in the long... (very) long term

Manipulating quasars and possibly moving galaxies would suggest the ability to control spacetime curvature.

Then again, moving a jug of milk also controls space time curvature.
by Zamfir
Thu Feb 08, 2018 11:42 am UTC
Forum: News & Articles
Topic: The Thread To Remind Me We're Living In The Future
Replies: 1932
Views: 400673

Re: The Thread To Remind Me We're Living In The Future

They'll need to have a fix for the car's SatNav before the next launch.

I think that they won't launch this car again, but keep it up there.
by Zamfir
Thu Feb 08, 2018 11:34 am UTC
Forum: Serious Business
Topic: Nash Equilibrium in American politics
Replies: 120
Views: 43906

Re: Nash Equilibrium in American politics

It would be good to have some data on the effect that you're trying to explain. Numerical time-series, preferably. Voter behaviour, legislative behaviour, data that say 'it used to be like this, now it's different'. Where does the effect show up (and where is it absent where you might have expected ...
by Zamfir
Wed Feb 07, 2018 3:53 pm UTC
Forum: News & Articles
Topic: Trump presidency
Replies: 8714
Views: 889350

Re: Trump presidency

Dauric, I find that a bit too easy on the intent. It's not like advertising (or clickbait or whatever) just falls from the sky. It's made by people who know exactly what business they are in, the business of getting to people to make unwise decisions. They just say, it's not illegal, I am not forcin...
by Zamfir
Wed Feb 07, 2018 2:01 pm UTC
Forum: Serious Business
Topic: Nash Equilibrium in American politics
Replies: 120
Views: 43906

Re: Nash Equilibrium in American politics

Thing is, I have trouble pinning down the core of your argument. As far as I can tell, it's something like this: - US politicians are less willing compromise than even in the recent past - this is because voters are nowadays strongly influenced by social media filter bubbles, and people in filter bu...
by Zamfir
Wed Feb 07, 2018 2:02 am UTC
Forum: Serious Business
Topic: Nash Equilibrium in American politics
Replies: 120
Views: 43906

Re: Nash Equilibrium in American politics

You keep returning to this Nash equilibrium, You also talk about social media bubbles. Are these separate ideas, or are they somehow related? . To me, they seem difficult to fit together. Nash equilibria assume perfectly clear goals, a precise and fixed numerical valuation of any outcome. But if peo...
by Zamfir
Tue Feb 06, 2018 5:51 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

At least for Nassar there was a history of specific complaints against him, but none individually was solid enough to make a strong case against such a powerful and well regarded person. In that light I think it's useful to see how a non-solid case looked like: Brianne Randall-Gay was 17 when she w...
by Zamfir
Tue Feb 06, 2018 6:21 am UTC
Forum: General
Topic: How did a discontinued foreign coin end up in my car?
Replies: 42
Views: 10065

Re: How did a discontinued foreign coin end up in my car?

Lots of unrealistic explanations here. Let's be reasonable, it's likely just a piece of metal that accidentally got eroded in the shape of a franc. Happens a lot with Jesus.
by Zamfir
Tue Feb 06, 2018 5:56 am UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

Yeah, this "accusation is guilt" climate seems to be the key difference to me, and is what I was (maybe inaccurately) going for with the "moral panic" comment I made earlier Weirdly, this debate started by a meToo campaign that consisted of story after story about sexual harassm...
by Zamfir
Mon Feb 05, 2018 7:04 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

That's a joke, right? Edit to flesh it out: the whole point of this metoo thing? sexual harassment is extremely common in the workplace. People might be Outraged about it in theory, in practice perps get away with the benefit of the doubt in public, and often approving fist-bumps in private. 'better...
by Zamfir
Mon Feb 05, 2018 6:46 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

So count me amongst those who think that 'being jailed when innocent' and 'being fired when having done nothing wrong' are both terrible things. It's still telling that this Emily Lindin gets a sewer full of vitriol as response, while labour market reformers get treated as Serious People, even by t...
by Zamfir
Mon Feb 05, 2018 5:50 pm UTC
Forum: News & Articles
Topic: Sexual Harrassment Epidemic
Replies: 538
Views: 96696

Re: Sexual Harrassment Epidemic

https://twitter.com/EmilyLindin/status/ ... 4822579200 "It is better that ten guilty persons escape than that one innocent suffer" and all that The tweet talked about losing a job. The 'ten guilty to free' standard is about criminal lawsuits. Jail time, not losing a job. Civil cases alrea...
by Zamfir
Sat Feb 03, 2018 8:44 pm UTC
Forum: Serious Business
Topic: Nash Equilibrium in American politics
Replies: 120
Views: 43906

Re: Nash Equilibrium in American politics

To get back to the original topic: There is a standard nash-equilibrium model of 2-party politics, called the median voter theorem, or Hotelling's law. This model says pretty much the opposite of tribalism or polarization. It predicts that the two parties will be nearly indistinguishable centrist pa...
by Zamfir
Sat Feb 03, 2018 3:16 pm UTC
Forum: News & Articles
Topic: What is red and blue and you see it in the sky?
Replies: 9
Views: 9654

Re: What is red and blue and you see it in the sky?

Try mooning teenagers.
by Zamfir
Sat Jan 27, 2018 9:22 pm UTC
Forum: News & Articles
Topic: Articles about re: sex robots
Replies: 115
Views: 39800

Re: Articles about re: sex robots

. Anything enjoyable can become an addiction that causes people to neglect friends and family even if it's just painting toy soldiers or trainspotting...

They made this whole movie about the destructive tendencies of addicted trainspotters...
by Zamfir
Sat Jan 20, 2018 8:43 pm UTC
Forum: General
Topic: A topic in which I expound my prodigious ignorance of polyamory. Posted 20 Jan 2018, 19:18 by CorruptUser
Replies: 48
Views: 7759

Re: Trump presidency

I mean, the only real argument for married couples getting tax breaks at all is that a stable family promotes better life-outcomes for kids, so why not cut out the middleman..? In the Netherlands, the is a legal concept of 'fiscal partnership', that treats other pairs (mostly) the same as a married...

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