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8:02 AM
@ChrisWhite I'm so jealous they don't put attendance sanctions on you, and this is even possible at your place!
And regarding the other:
@ChrisWhite This again is impossible at my place, unless you are dressed as a Ninja :P
I mean, it can be done, but you are only asking to get screwed. For sure.
Lectures being bad is out of question, it is only that "there are things lacking in you" due to which you are unable to grasp how good they are.
OK Sorry. I saw the post and jumped in. Enough of the ranting, I almost forgot that I'm using an anonymous handle and this ranting will only lead you to ask me which place am I ranting about. So, I'm going to chicken out of this now.
 
np pal :-)
institutions around the world never blame themselves for their student's failure
 
8:39 AM
hi @ice
 
@Omen hello Professor :)
 
lol
 
 
2 hours later…
10:32 AM
@IceBoy :)
 
 
4 hours later…
2:04 PM
I wonder what language was used to write "Wolfram language"
I just don't seem to find the answer (or, I'm not looking very well)...
 
Jim
Could be a trade secret. That info might not be available to the public
In which case, it's open to wild speculation and crackpot theories
 
Probably C
 
Hmm... It still bugs me - even a trade secret would be revealed after a few years. In fact, most people are curious about knowing secrets. Some should've obtained something
 
Also, @Jim: From an American, sorry about yesterday :(
 
@KyleKanos What happened? :O
 
Jim
Is this about the shooting?
 
@KyleKanos What happened? :O
 
Yessir
 
ah..
(damn, my 2G sucks - it said "timeout", that's why I retried and now it has posted two messages - sigh)
 
Jim
one man killed a soldier. I didn't read all the details, but it doesn't sound all that terrorizing to me
 
2:16 PM
After shooting the soldier, attacker moved on towards Parliament
 
Jim
And then he died before getting there. Still, our prime minister declared it a "terrorist act", but @KyleKanos I assume that kind of thing happens in the states all the time. So, yeah, that kind of sucks the significance out of it
 
Something like 30k people die per year due to firearms
In the US, that is
 
Oh, I didn't know that!!!
 
But it does not happen at Capitol Hill w/ Senators & Reps as the intended targets
Though some Senators have been attacked elsewhere (e.g., Gabby Giffords)
 
Jim
I live in the worst part of Toronto. I think we had 6 gun related deaths this year. So one shooting might be big news for Canadians, except that we hear about all the American ones. So any time it happens here we say "still better numbers than in America"
 
2:21 PM
@Waffle'sCrazyPeanut It's a sad fact. We've got a gang problem in the cities:
Though I should note that there's something like 40k deaths per year due to car accidents
 
Jim
And that's without snow on the roads all year round
 
@KyleKanos But, people don't have much concern for "accidents" :D
 
Yep. Americans are just plain dumb when it comes to things that can be/are dangerous
 
Jim
Learn to drive, ya hosers!
 
@KyleKanos Damn... That's nasty!
 
2:26 PM
@KyleKanos Compulsive fact checker that I am, this seems to say you're too high by a factor of three with that
 
That's only homicides
There's suicides, accidental discharges, etc
 
You're telling me that there are 20k people every year that are shot without someone wanting to shoot them?!
 
@KyleKanos Even for homicides, 10k is too high!
 
Jim
In toronto, our largest and most dangerous city, we had 107 cases involving either injury or death due to a firearm last year. Only 18 of those were actual deaths
And that's homicides, accidents, everything
 
On a happier note, I managed to answer a cosmology question without really knowing much about cosmology
 
2:33 PM
Hmm..it seems we have ~1k suiciders and about 100 deaths by accident/murder through guns every year with about one fourth of the American population. Now I'm even more glad to not live in America.
 
Jim
We had 1300 gun-related injuries in 2012. Only about 20% of those were due to criminal offenses. The rest were suicide, accident, or something called lawful intervention
But that's only because America is right next door and they keep bringing guns into our country. *Shakes fist*
 
Man, I'm the only guy who doesn't know about death statistics!
 
@Jim We get ours from Mexico
 
Jim
I believe it's called "the internet"
@KyleKanos and free with every purchase of 5 foot-longs or more at subway
 
@Jim Only in the South ;)
Once you get past the Mason-Dixon Line, the effects of Democrats screwing over for law-abiding citizens show up & you can't get them anywhere
One of my brothers did his 6 year Army stint, still can't buy a gun in NJ
Another brother is still an active Reservist (Air National Guard), also in NJ, and cannot buy a gun
 
2:38 PM
@Jim: How do you even survive in your horror town without a gun? :P
 
I, never being in the military, was able to buy a gun in a sports shop without any issue in SC
 
Jim
@KyleKanos Do you know where to buy a handgun near you? Because other than hunting rifles, I have no idea where to get a gun in Canada
 
@Jim I went here: academy.com
Academy Sports Shop
 
Jim
they can order it off the internet now!? Same day delivery?
Do they let you pay at the door?
 
I paid at the door and walked out with it
Same day
 
2:41 PM
I am beginning to understand the 20k people being inadvertently shot...
 
@KyleKanos You could've pointed the gun at the delivery guy... You could've bought another gun! :P
 
Jim
"Here's the gun you ordered. That'll be $100" "I think you're forgetting that you just gave me a gun"
 
I am instantly reminded of this:
 
Exactly! :D
 
Jim
3:01 PM
1
Q: What is the negative energy that they talk about in the design of hover-boards?

LuxiiSo I understand that the idea behind hoverboards, is that it has this "special battery" that supplies "negative energy" to help overcome the gravitational pull that it experiences. The design of the hoverboard is located in this link over here. I also understand that it uses lenz's law and eddy...

Thoughts?
Back to the Future prank or legit?
 
Hmmm
@Jim There's a kickstarter, it is an elaborate prank if it is one
 
Jim
true, but it looks so similar to B2tF to be legit. And the timing is too perfect
 
Hmm...they sound like bright-eyed idealists and don't give much technical detail, but somehow this doesn't really look fake
I'm willing to suspend judgement until I can have a ride on their boards :P
 
^That's what I think as well
 
Jim
I've found the proof!
 
3:10 PM
What proof?
 
Jim
In back to the future 2, they travelled forward to october 21st 2015. This kickstarter plans to release the first hovering technology, a hoverboard on October 21st, 2015
This is an elaborate prank
 
Yeah, but they mention multiple time that they're huge nerds - the nerd of their kickstarter coincides with the Star Trek convention
It's...suspicious, granted
Also, they're received 10k$ from 10 people...there'll be hell of a fallout if this is fake, though it would be interesting to see a kickstarter blow up
 
Jim
Look, if they had made real hover technology that was less than a year away from the release of a board capable of supporting a person, they would have had the military and many more people lining up ages ago to apply hover technology to more useful applications
Cars, planes, trains, shoes, skis
 
The cynic in me says you're right. The child in me just wants his hoverboard :D
 
3:15 PM
You mean like monorails?
 
Jim
tanks
i want my hovertank
 
I imagine the magnetic field required to lift a tank would be incredibly large
So large that it'd probably kill the soldiers around it first
 
Jim
Skateboards are too niche. They'd make billions but just making the hover tech and selling that out to others
 
@KyleKanos All I can think about when hearing monorails is this Simpsons scene
 
Jim
me too
 
3:17 PM
@KyleKanos Sooo...automate it and send it into enemy lines, I don't see the problem :P
 
Jim
If you can hover a person of arbitrary size with one board, you can hover a vehicle with several
 
@ACuriousMind So replace air-based drones with a tank? Seems a poor choice, IMO
 
Jim
Also, they claim they're working on hovering a building in case of earthquake
Buildings weigh more than tanks
 
What the heck happens to the building when the power goes out?!
 
Jim
@KyleKanos if it hovers, it's an air-based tank. Sounds like a good trade to me
 
3:20 PM
@Jim An air-based tank? Isn't that like a military airplane?
 
Jim
no, airplanes aren't nearly as armoured as tanks
and not so massive of a gun
Anyway, I'm going with this being a giant prank
 
They're successful with that, at least - they're all over the news
 
Jim
what news?
 
Well, if I google hoverboard right now, I get dozens of articles, from German magizines to the New York Times
 
Jim
ok, I'm looking at gizmodo now
Real, but not true B2TF hoverboard paleofuture.gizmodo.com/…
 
Jim
3:49 PM
@KyleKanos curse you. Beat me by a few seconds on that edit
 
the fluids one?
 
Jim
ya
 
4:05 PM
What did steven hawking mean when he said that black holes do not exist?
 
Jim
The third bullet point in his blurb's list is specifically directed at me
Even after I removed that line from it ages ago
 
@George:
88
Q: Why does Stephen Hawking say black holes don't exist?

Devesh SainiRecently, I read in the journal Nature that Stephen Hawking wrote a paper claiming that black holes do not exist. How is this possible? Please explain it to me because I didn't understand what he said. References: Article in Nature News: Stephen Hawking: 'There are no black holes' (Zeeya Mera...

 
Thank you!
 
@Jim Yeah, we discussed him yesterday
 
Jim
We?
better question: any resolution?
 
4:09 PM
No
There really isn't anything you can do about people who don't like your sandbox
 
@Jim If you scroll up, you'll see Danu venting a bit about that user
 
Jim
I hardly think it's fair that I've been singled out for something I was told was wrong, removed it, and wrote a corrected version of
 
...I think we are being watched :D Look again at the page you linked, @Jim
 
He's not in the room, so archived versions?
 
You can simply stay not-logged-in and watch the chat, I think
At least, I can
 
4:13 PM
Hmm
Interesting
 
Jim
No, I pinged him on his recent post and asked him to remove it politely
 
I see
How boring
 
Jim
indeed
 
It was much cooler to think he was stalking us
Or chat
 
Jim
Still a possibility
 
user54412
4:36 PM
@New_new_newbie It is nice how laid-back higher education is in the US. I don't think I would have made it through college if attendance had been mandatory.
 
In which countries is it usual to have mandatory attendance? There are some courses in the humanities here that require your presence, but mostly, they don't care whether you show up or not.
 
Jim
likewise
 
user54412
@ACuriousMind That's a good point. Though I suspect India and East Asia might be more strict
 
user54412
@ACuriousMind over here we hear a lot about the formalities legally owed to professors in Germany (like only addressing them with their full title). How much of that is true in practice?
 
@ChrisWhite Very dependent on their field. Most math and physics prof are very laid back and often ask you to not address them as "Herr Professor", and the younger ones may even ask you to call them by their first names.
The economists and jurists however are, from what I hear, very insistent on being adressed properly
 
Jim
4:46 PM
Like the physics profs
 
(They also often wear (semi-)formal attire, something you'll never see with a math or physics prof)
It's really a very different culture from discipline to discipline here
 
Jim
Ours wear flip-flops sometime
One goes barefoot always... That one is kind of weird
 
user54412
@Jim We have one of those too!
 
Hah, there's someone famous for even wading through snow in his beloved Birkenstock sandals here
...seems "that guy" is present at every university :D
 
Jim
Do you think when they're hiring physics profs they make it a requirement that at least one be unusually weird?
 
user54412
4:48 PM
I would definitely try to fill that niche
 
I think that happens...naturally, no need to require it ;)
 
Jim
"I see you're an amazing candidate and you have great references from all your previous positions. We just have one important question. Do you prefer to wear sandals or go barefoot most of the time?"
 
Perhaps these people were never hired. They just show up whenever a phyiscs department is founded/has lost their resident weirdo, and refuse to leave until they're granted tenure
 
Jim
Yup, that's the way for me. I've made up my mind now on how I'll get a faculty position
Bring me some flip-flops!
 
5:03 PM
1
Q: What is the impact of such a device on math education?

Ice BoyRecently I found this device advertised which uses any mobile phone's built-in camera to solve equations. What impact will it have on how Algebra will be taught in the future? In particular will maintaining skills in solving equations become a thing of the past?

 
If you believe math should be about solving equations, then you're wrong. For real math, such a device has exactly zero impact. (See Lockhart's Lament (pdf) for a comprehensive rant on what is wrong with math education)
 
Please feel free to answer :-)
 
 
2 hours later…
6:58 PM
@ChrisWhite Comforting words. Thanks :)
 
 
4 hours later…
10:43 PM
@Jim Everybody loves a bit of the good ol' 'terrorist' label these days
@ACuriousMind You again with the fact-checking?!
@KyleKanos No offense, but I don't think this is a bad thing, at all
@ACuriousMind Heh...
 

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