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vzn
12:17 AM
dmc re "mismanagement". the New Yorker article re fusion makes it clear that even recent large projects have massive management/ political challenges, its not unique to any one project. modern LHC has succeeded but at significant cost. imagine/ suspect there is significant politics, hurdles, cost overruns there also but so far its fairly well hidden.
humans have difficulty doing large projects, its not so much the technology but the collaboration/ political structure that is extremely challenging.
it seems nobody has invented a highly effective political structure so far. neither democracy/ authoritarianism work all that well. and there do not seem to be any other models.
eg there are decades of failures of large IT projects for example, they are not well recorded in history, although there are a few rare ppl studying/ recording them. one old book on the subject was called "death marches".
 
12:38 AM
@vzn I think there's a lot of literature, especially on IT project management. For example, the classic The Mythical Man-Month (and of course modern literature is filled with techniques such as full-stack, devops, agile, lean, scrum etc. which all show the shortcomings of the alternatives, usually with several examples). And then there are websites like the daily WTF.
 
After the SSC debacle, the DOE established a more detailed set of goals to be met before getting access to money. CD-0 through CD-5 (a few of which have sub-goals).
There are also additional accounting requirements and training that the senior money managers have to take.
 
vzn
there may be some "lessons learned" but the real issue at the core is large scale human collaboration and it will possibly never go all that smoothly... aka bureacracy
 
Various half-a-billion dollar projects have completed with no worse overruns than the rest of the federal government (which means medium bad ...).
 
user54412
@vzn My understanding is something like 70-80% of the funding for that is coming from NASA. In a way it's no different from the Apollo era -- much of the hands-on manufacturing is contracted out to private industry. It's just that these hip new startups get all the public attention today, whereas NASA got all the credit back in the 60s.
 
vzn
wrt "big physics" & spaceflight etc a half-billion dollars is a small prj so to speak.
yes have read some of the IT prj mgt literature. its funky that there is a strong trend toward less mgt there eg wrt "agile" etc.
 
12:41 AM
Certainly there is simply friction built into big projects, but there is bad (which is what we have now) and simply incompetent bordering on negligent which is what went on during the SSC.
I'm in particle physics. 1/2 a billion is big enough to bring on the most stringent control measures.
 
vzn
agreed SSC may have been worse than average, its possible... but can the US point to any successful prj on that scale? we can barely pull off "obamacare"....
 
@vzn Well it's not all just bureaucracy. There was a discussion earlier this week about the importance of social skills in a technical environment, and in a sense this connects to that.
 
vzn
cost control is not the big solution to large prjs, its certainly a big part of it....
 
user54412
@vzn And I don't know much about the LHC, but I can tell you that in astronomy (Gaia, Euclid, etc.) the ESA limits how much the US can contribute -- they don't want the US to individually contribute more money than all of the actual European countries individually.
 
vzn
look at how many billions of dollars were squandered in iraq in the last decade.... its staggering but still fairly well hidden....
(rats meant to edit that & deleted it lol, tiny-close buttons on my iPad mini lol)
its deeper than mere social skills, the core problem involves large-scale mgt/ control/ organization/ accountability/ political structures. even large govts routlinely fumble large prjs.
limiting individual nation contributions may help some... but then theres the big challenge of intl cooperation. LHC possibly is one of the most successful models ever.... maybe they should document their org structure/ system somehow....
obamacare opening day all the web sites crashed... and for weeks.... really wanna say something nice but not very impressive :(
 
user54412
12:52 AM
@KyleKanos There are several bets in my office on whether or not JWST will ever return data. I always take the position that it won't.
2
 
vzn
lets look at large corps as organizational systems. sometimes dysfunctional. MS recently announced layoffs around 15%. IBM (something like 400K employees) ... strong rumors of a staggering 25% layoffs upcoming.
 
user54412
It's not clear how much JWST failing will impact NASA as a whole, since it's actually just a small fraction of NASA's budget, but I'm pretty sure failing to deploy will make sure no money is spent on astronomy proper for a number of years. If it fails, the best thing for astronomy is for it to blow up on the launch pad, so we can blame the rocket scientists :P
 
@vzn Well there's been huge shifts in their industries and business models, so it's not surprising that layoffs happen.
 
vzn
the shifts have happened for years and the organizational brains of the systems failed to adapt.
because they are like dinosaurs, large bodies but small brains.
and nobody has really figured out how to have a big body & big brain. although maybe LHC comes closer than ever. hubble telescope is another "general" success although look how they botched the lens, holy cow... & saved it with a legendary Hail Mary spacewalk.... most complex ever....
but hey we do sports pretty well eh? Super Bowl? :)
 
user54412
Someone connected to Hubble recently described it as the best story you could come up with for a movie. All the difficulties and doubts getting it up, the moment when everything seems lost, the plan that relies on a miracle, and the final success, creating some of the most stunning images in human history. It just sounds like a screenplay.
 
vzn
1:03 AM
yeah actually agree that would make great movie. geek movies do pretty well sometimes/ lately eg hawking, turing. apollo 13 did great. !!! great idea man!
& the mars rovers made good imax movies :)
lets just remember though that truly great engineers do not rely on miracles wink
alas spacex recent mishap is another recent item/ datapoint on the US record :(
 
vzn
1:30 AM
re cool geek movies/ robotics see also new flick at theaters now, spare parts ... gotta see it soon! great story! happy ending!
isnt it cool that redmayne/ cumberbatch both nominated for oscar... geeks win either way :)
 
 
2 hours later…
3:10 AM
@ChrisWhite It's a bet I regularly take!
 
Go Patriots!
 
vzn
3:31 AM
←woohoo! rooting for patriots solely for owners gf :p
 
The first dynasty of the new millennium
 
3:44 AM
That @vzn is a familiar theme :D
 
4:07 AM
@TAbraham Actually the community is more supportive than you think. You are currently expecting someone to help you solve every small stumbling block you come across. But we know by experience that you can only learn properly if you sweat it out and solve these problems yourself. You need to put in considerably more effort than you currently are doing, and learn some more basic quantum mechanics, in order to tackle the problems you are trying to solve.
6
 
The twitter reactions to the Superbowl are fantastic
-2nd and goal from the 1 yd line -1 timeout and BEASTMODE IN THE BACKFIELD... I would not have throw that ball to Jerry Rice! #fail
U have a running back named beast mode n u line up in shotgun formation n throw the ball on 1 yr line...the real MVP IS SEATTLE OC
Seahawks with the worst offensive call in #SuperBowl history. Why didnt you just run #BeastMode
If I were GM of the Seahawks, I'd be happy though: it makes their QB quite a lot cheaper that he blew the biggest game at the 1 yard line.
 
 
5 hours later…
8:55 AM
0
Q: Meaning of an image on Feynman's shirt

Sabbir HasanIs there any physical meaning of the image on Feynman's T-shirt?

Is this off-topic?
 
 
2 hours later…
11:14 AM
Hello everyone! I'm Ritvik, pleased to meet you all.
 
Hi Ritvik
 
11:51 AM
Hi Ritvik, hi Mark
 
I must say Emilio, nice answer here: physics.stackexchange.com/questions/162930/…
 
Thanks
"If you use p=0.05 to suggest that you have made a discovery, you will be wrong at least 30% of the time. If, as is often the case, experiments are underpowered, you will be wrong most of the time. "
 
Ha
Good to know
One of many reasons to be a theorist :)
 
 
2 hours later…
Ell
1:28 PM
Hi all
 
2:02 PM
0
Q: The 'populist' badge

bobieCan someone explain exactly when this badge is awarded? Highest scoring answer (a) that outscored an accepted answer (A) with score of more than 10 by more than 2x I understand that (being a the most upvoted answer): a > [2 * A] + 1 a > 10 if that is correct, if A < 5, an answer a wi...

 
 
1 hour later…
3:14 PM
I am beginning to suspect these people have not read anything about GALPROP...
 
Jim
3:26 PM
If that's a crime, then I'm guilty too
 
Well they make the claim that Fermi acceleration, which gives a cosmic-ray power law spectrum of $N(E)\sim E^{-2.0}$, can't get us to the -2.7 power law we observe
However, they're neglecting the fact that the Fermi process gives the spectrum at the source, not what's observed
 
Jim
those bastards!
 
What's observed has traversed the galaxy, interacting with loads of other things (e.g., spallation processes occur, giving us over-abundances of B & Be relative to solar)
 
Jim
Just to be clear, you meant Boron and Beryllium, not H and He, right?
 
I'm fairly certain that it's been theoretically shown that a shift of 0.6-0.8 is expected in the power-law (making it $N(E)\sim E^{-(2.7\pm0.1)}$
@Jim yes
 
Jim
3:35 PM
I had to check, B and H are right next to each other on the keyboard. It's easy to make that mistake
 
Understood
 
3:48 PM
Hmm, seems there's a bug in SE's counting methods. They seem to think that I've not done any reviewing before: physics.stackexchange.com/review/suggested-edits/71987 (need to click "more")
 
Jim
@KyleKanos You've been slacking!
 
4:13 PM
@PhysicsMeta Ah, the populist badge. In unrelated news (cough), this answer by dmckee is worthy of one more upvote.
 
I can't, sorry
 
Jim
Likewise
 
I think you've advocated that one before too, @ACuriousMind
 
Yeah, it's been a few months, though. Perhaps someone else will see this :P
I have gotten about 7 upvotes on my answer there since then, but not a single user voted dmckee's up.
It's oddly frustrating
 
Maybe I should advertise my good answer in hopes to hit that "Great Answer" fame
 
Jim
4:21 PM
27 votes? good luck
 
It'll happen!
 
Jim
At least my good answer only needs another 26 votes
 
I could use some upvotes here to get the Populist badge
5 on his, 8 on mine
 
Jim
I could use my potential populist being reopened... And 5 votes on mine
But I can't vote to reopen it anymore. And I can't bring it to meta with a "It's not a duplicate" because I'm too biased to know what I'd do if it weren't a potential gold badge
@KyleKanos You have to be the highest scoring answer
There's another with a score of 27, so you need 13 more
 
4:28 PM
@Jim Gah. Forgot that
 
So, 13 on yours
That's highly unlikely
 
Oh well
I got nothing close for a populist badge
Unless OP to my rocket question wants to accept a different answer
(specifically Asad's that's at a 28)
Also: I did get an upvote a moment ago on my Rocket question
 
Jim
Wasn't me
It's a race, we're neck in neck
Based on the age of the questions, I'd say I'm going to win
 
Based on my being awesomer than you, I'm going to win
 
Jim
Based on denial, I win at everything
 
4:34 PM
 
Jim
wow he has really been slacking
 
That's the only queue in which it's even something close to a race
 
Jim
he started on SE a month before I did.... What have I been doing with my life?
0
A: Problem related in relative motion

John Think of the velocity of the boat as a vector. $1.5$ m/s in the x-direction (to the shore), $0.9$ m/s in the y-direction (in the direction of the river) As such, you can find the magnitude of the velocity vector, which we routinely call the speed of the boat The 500 meters in the x-direction wil...

Opinions? Is this a case of feeding the bears?
 
4:53 PM
Please note that Physics.StackExchange is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems — Ritvik Choudhary 58 mins ago
What!?
That's my auto-comment that I wrote!
 
I would take that as a compliment.
 
0
Q: What's the purpose of the tagline in the Bounties section of the profile?

Emilio PisantyThis struck me as rather odd. The Bounties section of any given profile, for any of the three tabs (active, offered and earned), contains a list of post links with the amount of rep of the bounty in question. It also has a tagline that indicates, as far as I can tell, the same 'activity' link tha...

 
@Jim Yes, that is feeding the bears
 
5:57 PM
@KyleKanos Hi ! Are you in the room? Yesterday the Curious Mind explained me something, but it was late in the night and I don't remember well. How do you use the \tag to send the numbering of an equation to the extreme right of the line? Can you tell me?
 
@Sofia You have to number it yourself, but it's just \tag{1} in the line
Or even \tag{this one} will result in (this one) added to the right
 
Jim
6:12 PM
@Sofia I'd like to point out that he is A Curious Mind, but he is hardly the Curious Mind. One of many, I suppose
I suspect @ACuriousMind will probably change his name now, just out of the politest possible spite
 
Curiously enough, there are indeed two other Curious Minds here.
 
Jim
So you are one of many. That's very humble of you to not try to raise yourself above the others by using a definite article
 
There's more Kyle's here than curious minds
 
@Jim We can't all be monarchs like you, sire. Some of us have to content themselves being primus inter pares.
 
Jim
E pluribus Jim
 
6:20 PM
@KyleKanos
 
@Jim Not to confuse with "E Pluribus" jam, a confiture made of assorted fruit.
 
@infinitesimal A classmate showed me that one this morning
 
Oops
Move over steelers there's a new member in the dynasty club.
 
Uh, Steelers have 6 rings, Pats have 4.
And the Cowboys have 5
As do the 49ers
Not sure that I'd count the Pats as a dynasty
Though, they are absolutely up there in "best clubs"
 
6:31 PM
LOL
 
@ACuriousMind Well there's always youtube!
 
I cherish my ignorance
 
It's both enlightening and humorous
 
@Jim of course there are many curious minds, but he calls himself A Curious Mind. When I tell someone that the ACuriousMind told me, it's uconvenient for me. I can tell that "the Curious Mind" told me. In our site there are many curious minds but only one Curious Mind. The other ones are Curious One, Curious Joe, etc. So everybody understands.
 
@Sofia Your use of "the" in front of his name is not necessary. You can say, "something that ACuriousMind told me last night was <this>"
 
6:44 PM
@KyleKanos I am a bit less ignorant now. I'll stay with fantasy football, though. :P
 
@Sofia I don't get your edit here. Why number the equations when they are not referred to? Why abuse "\ \ \ \ " as the equations remain unaligned? There's no real reason to align them here anyway, and if there were, you could just use the align environment (\begin{align}\end{align} and all that jazz).
 
@ACuriousMind Haha, I'm glad you took that ~4 min to watch it
@alarge I went ahead and fixed that
 
I believe that @DavidZ argued that it is more important to use LaTeX semantically correctly on SE than it is for the equations to look nice (well, I'm sure he'd agree that in some cases you have to hack it; Or it might've been someone else, thus the ping). I'm not sure if I agree: Is there a policy on this?
 
7:00 PM
@ACuriousMind I got complaints about calling you the Curious Mind. Do you subscribe to these complaints? If you do, I will accept the complaints. But I like to call you the Curious Mind. Do you complain? It's only you who has the right to decide.
 
@Sofia As long as it is not an insult, you can call me whatever you like :)
 
Well said^
 
@ACuriousMind , is there any reason on Earth to insult you? Everybody likes you.
 
@DanielSank: Why you no accept?
 
@Sofia Hehe, no, I don't think there is. I just wanted to include that condition because "You can call me whatever you like" alone would very likely have elicited some kind of reaction from the other people here ;)
 
7:07 PM
@ACuriousMind Preemptively guilty!
 
:: glances at Jim ::
(and also at KyleKanos)
 
This is a new one. OP deletes questions, creates new account, then asks same question: original and dupe
 
@KyleKanos Hmmm...perhaps someone realized that asking under their real name for help with an assignment is not the best of ideas?
(and didn't know that you can change your username after registering)
 
You can change your account name in the edit portion of your account
But this person didn't just change their name, they created a new account...
 
@kyle for whatever reason he/she probably wanted to remove his name, perhaps you should remove your comment to respect that
 
7:19 PM
Also, Google leads me to believe it's just a pseudonym (like some of us have)
@innisfree Fair enough. I've swapped it out
Though 10k+ members would still be able to see that
 
@ACuriousMind : no, no, you said, "you can call me ... " that means the privilege is given to me, you didn't say one can call me.
 
@Sofia Hm, that's also true. Though an ingenious jester might have tried to interpret the "you" as the generic "you"/indefinite pronoun.
@KyleKanos If it is really just an SE pseudonym, I've got no reason at all for this
 
@ACuriousMind The beauty of English is how awful it really is
@ACuriousMind I don't judge people's choices, I've got plenty of internet-pseudonyms
 
@KyleKanos Ah, German is plagued by a similar phenomenon. Our indefinite pronoun is man, pronounced the same as Mann, which means man. There's no end of slightly sexist jokes about that.
 
6
Medical / Healthcare Devices

Proposed Q&A site for engineers, Professional or Healthcare startups in Healthcare/Medical device/instruments domain. Relevance to Diagnostics, Assistance tools, Mobile based interventions, etc.

Currently in definition.

 
7:27 PM
@ACuriousMind the first name in the username is might actually hyphenated (a...-l...), which would be two common first names and a surname. i don't think it's a pseudonym
i didn't think of it out loud, though :D an alien, maybe it is indeed a moniker
 
@innisfree The google search seems to indicate that, though - all hits for the name are either directly or indirectly from SE. If it was a real name, I'd be very impressed by that person not leaving a single hint on the internet to their existence apart from SE
And that would be a hilarious, but cruel name to give one's child, yes :D
 
Actually doing a quick Google search for me turns up a fair few questions/answers/comments from my SO contributions dispersed elsewhere
 
I have no idea what you're talking about

>.>
<.<
 
My mistake then
 
7:57 PM
A thousand thanks to the random internet citizen who decided to show dmckee's answer some love <3
 
@ACuriousMind ahhh! This is an answer that you must see. But please, don't give him a minus.
 
My precioussssssss [polishes Populist badge]
 
@ACuriousMind Congrats
 
@Sofia Just another one who has fallen prey to perturbative thinking/takes Feynman diagrams literally. But the answer is, as an answer to the question posed, essentially correct. No -1 from me.
@KyleKanos Thanks
 
@ACuriousMind I would like to understand this more specifically. The replier says the short answer is that virtual photons/gravitons can be seen to be responsible for the generation of force. You say that the answer is essentially correct. Then, is this true? As far as I know your position is that isn't true. (I still ask that the replier not be given a minus).
 
8:14 PM
@Sofia The "essentially correct" means that the answer "No, gravitational waves are not required for the force of gravity to act" is correct, and that the rest is a very widespread (popularized) interpretation of QFT that I consider highly misleading.
 
@ACuriousMind Comment on it?
 
@KyleKanos Oh, you have not yet read that I dislike speaking of forces as being mediated "by the exchange of virtual particles"?
 
If we commented every question on this site that invokes the notion of virtual gauge bosons to explain forces there'd be no time for anything else.
 
@ACuriousMind Sorry, I meant it as a question about the post itself. Did you comment on the post?
 
Ah
Well
That'll just start a comment war.
 
8:24 PM
@alarge you know, I don't remember saying exactly that. I believe that in many cases when you use the semantically correct markup, it does look nice. And if it doesn't, you fix the meaning of the markup. That being said, nice is subjective, semantic correctness is not.
There are some exceptions in MathJax, such as typesetting units, where we have to use something like 10\text{ m} because there's no proper unit macro like \SI. But still one could argue this is to ensure the final appearance is semantically correct, not simply "nice".
 
My $0.02 on units is that they probably shouldn't be used in Latex on the site. But doing $9.81$ m/s$^2$ can be a tad annoying with all the $s
 
Units are mathematical quantities and it would be semantically incorrect to exclude them from the $...$
So I would argue that $9.81$ m/s$^2$ is in fact wrong, not just annoying
 
@ACuriousMind Would you mind explaining what you mean by direct product?
I would use this term interchangeably with tensor product in that context...
 
@DavidZ In documents I've written up, sure. But on this site in particular, it just looks bad to me. Probably due to a difference in the fonts
 
@DavidZ Unless there's a convention about serifs on unit symbols (which would be new to me) I don't see how that can be true
 
8:32 PM
@MarkMitchison A direct product of vector spaces is just their cartesian product in my diction.
 
Ah ok
I would describe a tensor product of matrices equivalently as a direct product
Good to know that this could cause some confusion
I don't think I'm alone in this convention though
 
For me, (direct) product means the natural categorial notion of product in a given category. For vector spaces, this is just the cartesian product.
As a discussion some weeks ago showed me, it is very difficult (perhaps impossible) to find a category where the tensor product of Hilbert spaces is their actual product
(...which reminds me I still need to revise some of my answers about that...)
 
OK thanks. Category theory doesn't come up much where I work!
 
I'm pretty sure you guys are just making up words
2
 
@KyleKanos There's a reason it's called abstract nonsense ;)
 
8:38 PM
haha
 
I'd probably understand what you're saying if I took the time to study it. But alas, I'm currently too lazy and busy
 
@MarkMitchison units are written in upright (non-italic) font. There is no convention on serifs, specifically, except I suppose that units should use the same font as other mathematical symbols with the exception of the italicization.
@KyleKanos you mean that escaping from $ for units looks annoying? I definitely agree with that. This is one of those cases where it looks nicer when you do it the semantically correct way. (Or at least the closest thing we have to a semantically correct way.)
 
@DavidZ Right. I think I missed the emphasis on semantically.
Syntactically using $..$ is fine. You are just saying that it is "immoral" since the unit symbols should belong to a math alphabet. Right?
 
@DavidZ What I mean is that $m/s^2$ looks bad to me when right next to the text. I'd rather the units be the same font as the text and add in the latex for powers as needed.
Even doing $\rm m/s^2$ doesn't look right to me
The fonts are just different
In a Latex document, the fonts are the same (when using \rm or \text{})
 
@MarkMitchison I wouldn't consider this a question of morality. But yes, I'm saying the unit symbols are mathematical symbols and should be typeset the same as other mathematical symbols.
@KyleKanos oh, huh. Well I'd rather the units be the same font as the math. Something like $9.81$ m/s$^2$ looks really bad to me. But setting my personal preferences aside, I do also think it's wrong for objective(ish?) semantic reasons.
Of course this isn't an issue in proper LaTeX because the fonts are the same, as you mentioned... but run over to TeX - LaTeX and see how much they will chew you out for using $9.81$ m/s$^2$ even if you can't use siunitx for some reason.
And in that case it is purely an issue of semantic correctness.
 
8:46 PM
Luckily I never need to plug in the numbers to have to write LaTeX units :)
 
:-P
 
The perks of being a hard core theorist :)
 
@DavidZ Oh, you are talking about semantics from the point of view of the Latex compiler. I think probably semantics from the point of view of the reader here is more important, hence why I consider it a moral issue. (The reader cannot see the $...$ so this has nothing to do with semantics from their point of view.) Obviously this is what you could call "primarily opinion-based" :)
 
@DavidZ By the way, nice Google hangout. I didn't have time for all of it, but it was interesting.
 
And now for something totally unrelated, I've recently developed a dislike for calling a subroutine inside a Fortran function. No clue why.
It may have something to do with my starting to use (prolifically) the pure modifier
 
8:53 PM
@MarkMitchison Well given that the licence for the texts of SE is rather non-restrictive, in the future things might get ported to other places, or SE might change rendering, or whatever, and in this case semantics would matter.
 
@MarkMitchison well in this case it would be semantics from the point of view of the HTML+MathJax renderer. And (what @alarge said).
One of the benefits of semantic correctness is that it allows the computer to accurately render the markup in different formats or styles.
Anyway I have to go to lunch so I will have to bow out and catch up on this later
@JamalS thanks... it was okay. It's all on Youtube if you really want to see it.
 
@DavidZ That's where I saw it.
I forgot to watch it since it was 12 PM here, so I watched part of it on YouTube.
 
oh okay. Well, I don't expect anyone to watch it ;-)
 
I always use sans serif fonts for text when doing presentations, but to my eye math looks wrong this way, so I kind of mix them (using serif for math) and in this case, even in LaTeX the issue of semantics does come up.
 
To be honest, I was most curious about hearing/seeing you, hiding behind that avatar :)
Hmm, hope that doesn't seem creepy...
 
8:59 PM
@alarge Good point.
@DavidZ LIkewise
 
9:35 PM
@alarge and everybody! Did somebody see the question of that Shion girl? What a kind of thoughts can bear the mind of such a sweet creature!!!!! Aaaau poor humankind !
 
@Sofia That assumes the profile image is actually her ;)
 
Full disclosure: I am much more handsome in reality than my profile picture suggests. Also, I may be a dog.
3
(...anyone else seeing chat messages appearing double shortly after submitting them?)
((...and no, I am not drunk and seeing double))
 
I think many of us look different than our profile images
 
@KyleKanos I always picture you exactly like your pic: A slowly expanding cloud of nova remnants hovering over the playground, watching its kids ;)
 
@Sofia Well, she's a Las Vegas escort. Well, probably not, but that's just one of the sites the picture comes up on (and I'm not even going to write the names of the others). My Google Fu is strong.
 
9:49 PM
She? Who says this person's a "she?" Just saying.
 
@HDE226868 One could make the case that by using an obviously female profile picture, they chose to self-identify as female.
 
@ACuriousMind I was being light-hearted. There's nothing wrong with a male using a female profile pic, if that's how they identify.
 
@HDE226868 I was referring to the girl in the image, not the person behind the keyboard who, obviously, is not the pictured girl.
 
@alarge I understand. That's what I was getting at.
 
@HDE226868 I would ping @Phonon for his two cents on that, but it seems he's not been here for too long!
 
9:54 PM
@ACuriousMind Why?
 
Because I am quite sure Phonon is male (and identifies as male), but has a female profile picture
 
If, on the other hand, we want to verify the gender of the person in the photo, I have a strong suspicion that convincing pictorial evidence exists online.
 
(Sigh)
 
@alarge I am now simultaneously curious and afraid what I will find when I repeat your image search :P
There won't be tentacles, will there?
 
Shameless promotion of the day: Engineering Stack Exchange went public about three hours ago.
 
9:59 PM
Yay Engineering!
 
::hiss::
 
Now we have a place to send our engineering questions?
 
@KyleKanos Bring 'em on!
 
Are you active there too?
 
@KyleKanos 3rd in rep, 1st in meta participation, 2nd in total number of questions and answers. . . Yep.
 
10:02 PM
Nice
Heading home now
 
See you. Hope it's better where you are than where I am.
 
@HDE226868 Betelgeuse is hell this time of the galactic year, right?
Should get better in about 543 Earth years
 
@ACuriousMind Ah, I see I have another profile view.
Currently, we've got ice, slush, rain and snow.
No supernova, though.
I should probably be going, too.
 
@alarge what's your problem? Why shouldn't she be a "she"? Didn't you see the movie "Deadlier than men? It's a "she". But, what kind of name is Shion? Could it be an American name?
 
Before I go . . .@Sofia I sincerely apologize if I came off as insensitive or hurtful in the comments below that nuclear reactor question. I'm extremely sorry for what you and all you knew went through, and I didn't mean to seem mean. I hope I didn't make the wrong impression.
 
10:12 PM
@Sofia The person in the picture is not the person writing the messages, this was my point. I've got no idea if the person writing the messages is a he or a she. As for the picture, a common internet joke in poor taste, my apologies; I'm sure it's a girl.
As for the name, I'm guessing it's of Japanese origin. A wild guess, but I suspect it's a reference to some anime/manga.
@ACuriousMind I didn't find anything "aquatic", but definitely NSFW.
What is the general policy of SE on user images? Should they, too, fall under the relevant licenses? I'm guessing that ACuriousMind, for example, does not own the copyright to the image he is using. I suppose Wikipedia is quite strict about these, but SE has plenty of copyrighted images in answers and so on, and I've never seen a crackdown on these.
 
I'm actually not sure whether or not my image is copyrighted, but I guess it is.
What copyright may be on character portraits from a game from '98? :D
And, more importantly, who holds it, given the original studio doesn't exist anymore?
 
10:29 PM
But the studio might have sold the rights, right? Also, as a related example, I don't think it's legal to pirate movies even if the studios have gone bankrupt.
 
@ACuriousMind Wikipedia implies it's still there: en.wikipedia.org/wiki/Image_copyright_(Germany)
 
I'm not sure who would sue you, then, though.
 
@ACuriousMind A vote for me translates into a extra-shiny badge for you: physics.stackexchange.com/a/130160/520 got its eleventh vote today. I suppose you can expect your populist sometime tonight.
 
. . . But of course, it's Wikipedia.
 
Congrats.
 
10:31 PM
@HDE226868 That's for photos. My picture isn't a photo (I think).
 
@dmckee His history says he got it two hours ago. . . My belated congratulations.
 
@alarge Yes, the rights to the game lie with another studio now.
Thanks, latecomers ;)
3 hours ago, by ACuriousMind
My precioussssssss [polishes Populist badge]
 
Well, I've been in class and lab for four hours. I wasn't to know.
 
I think I will just risk being sued. Besides, there must be dozens, if not hundred of people using this avatar on RPG fora.
@dmckee Then I must tell you this was not a mere coincidence, I actually posted that question a few hours ago here in chat when someone mentioned that badge
 
@ACuriousMind Right, but in SE I think you sign off confirming that your contributions all fall under CC. Which is not true if you use (particularly in your answers) content that is not so licenced.
And I do realize that many people use images they don't own the rights to, particularly off SE, and I didn't mean to single you out in any way.
 
10:38 PM
@alarge I have never knowingly used content in my answers that is not properly licensed (the only images I have ever linked are from Wikipedia, and the only papers I link are things like arXiv abstracts or lecture notes directly from the webpage of the guy who wrote them)
 
@ACuriousMind Ah. Gaming the system. But you did it well, so congratulations are still in order.
 
Or do you think that already the use of this picture as my profile picture invalidates my content being CC?
 
@ACuriousMind I couldn't say. I doubt it, but I suppose a lawyer might argue otherwise (not that it would ever come to it).
Maybe this has been discussed in the mother meta? (I imagine that the issue of images in answers would have been)
 
Hmmmm...it could be time for a change of profile picture, regardless of this.
 
How do people feel about an open-quantum-systems tag? There seem to be a growing number of questions focussed specifically on this. Currently they could be lumped into quantum-optics or similar, but this is not really very descriptive or accurate, since often the principles are rather more general than light-matter interactions.
...I guess meta would be the right place to ask this?
 
10:52 PM
@MarkMitchison You could just create the tag and see if it gains traction.
I think you need only ask on meta before doing that if you think the tag is particularly controversial
Which doesn't seem to be.
 
@ACuriousMind
No
:)
Since I'm the only one who answers those questions
 
Heh, very well then
@alarge There, my profile picture is now fully CC compliant ;)
 
Ha nice picture change
 
Haha, well done!
 
Chat seems to cling to my old one, though
Let it go, buddy...
 
11:21 PM
wikipedia....yuck
 
@KyleKanos We got super annoyed with pure and trying to debug by printing things. So we hacked it by putting -DPURE in our debug build compiler options
We also found that pure didn't change performance anymore
But it was super fun to tell people in meetings that we were pure-ifying the code
 
I have another question in mind - experimental physics of course, but are very reluctant to post it. However, the main idea behind it is photonics.
I understand most of the principles, but there are a couple of nagging questions (you know, the kind that keeps the mind turning well past bedtime).
 
@SabreTooth Post it then. Your questions have hitherto been (at least upvote-wise) well received.
 
but as it applied/experimental physics, it is unlikely to get an answer (or a non-answer like my previous one) - that's the part the bothers me in a small way - not receiving an answer. Ironically, I have figured out the solution to all 3 of my questions.
 
You can answer your own questions, you know?
 
11:34 PM
@SabreTooth Then post your question and answer it when you figure it out
 
yes, I am aware of that
 
Just treat it as rubber duck physics
 
"rubber duck" physics? ....
 
Didn't click the link eh?
Rubber duck debugging is an informal term used in software engineering for a method of debugging code. The name is a reference to a story in the book The Pragmatic Programmer in which a programmer would carry around a rubber duck and debug his code by forcing himself to explain it, line-by-line, to the duck. Many other terms exist for this technique, often involving different inanimate objects. Many programmers have had the experience of explaining a programming problem to someone else, possibly even to someone who knows nothing about programming, and then hitting upon the solution in the process...
 
strange, unique but strange
 
11:36 PM
By talking about the problem (in this case physics) outloud, you will find your own solution to (and hopefully put the answer down)
 
I do it a different way - you know, through rigorous and valid experimentation methods
 
@SabreTooth That sounds expensive. Rubber ducks are really cheap
And you can take them in the bathtub.
 
Trust me on this: those of us who do experiments regularly need rubber duck debugging just as much as coders.
Both types need to understand unexpected behavior in complicated systems.
Mind you, in the past I've used a professor in place of the duck. Works a charm.
Alas, these days I am the professor, so I need a new icon of idotism to talk to.
 
@dmckee You...took a professor in your bathtub?
3
 
Hmm...not yet. Haven't found one that might be willing.
 
11:50 PM
Nothing annoys me more than experimentalists who report a behavior that doesn't seem to make sense and they justify it by "Well, I turned it on and that's what it did and I measured real things. Maybe your code is wrong"
 
@tpg2114 ::boggle::
 
We had a project to match an experiment, and the guy's combustion chamber dumped into the atmosphere at the end of it. But he said there was suction at the core of the outlet (because there was no duct/pipe after it) which it's pretty much impossible to replicate that in a simulation
So I asked him to tell me how fast it was being sucked in, hoping it was a small amount
 
When you report a surprise you just know people will ask you to rule out dozens of possible causes, so you have to be ready to answer those questions before you report.
 
He replied a week later "Well, I held a string in my hand and it got sucked in but I couldn't hold it there long, the exhaust was hot!" and that was the end of it
 
@ACuriousMind Actually, now that I think about it I've gone to the onsen with a couple of professors. Does that count?
 
11:54 PM
@dmckee Probably
 
So @dmckee, do you have any active research projects going on now? I know you said you're at a teaching college with limited support
 

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