skysight-inc/HackerNews huggingface dataset:
Hi Sal,

I think torque2's point is that the way they teach physics cannot be encapsulated in a YouTube video. Physics teaching based on the last 20-years of PER requires engagement of prior conceptions and inquiry-based activities (to name a few key findings). This cannot be done in the type of teacher-centric videos you're giving. I'll admit that your lectures are awesome... but they're based on a learning traditional that has been proven to be ineffective relative to student-centric environments by a couple decades of education research.

I had a serious question that I hope you'll answer:
"When you learn the physics required to make a video, do you just watch MIT lectures or do you go out and actively search for and build your own understanding of the concepts? Do you talk to other people about the ideas you have and what they think about the subject? In short, do you have a conversation with the material, or is the material hand-fed to you from a video?"

Thanks for all your hard work Sal, it definitely has a place in a learner's experience... it just might not be the place it's currently being touted as in the media.
Have you considered immigration? Say move to a different country where there is plenty of startup capital, and your skill set might be in need and greatly appreciated. Try look into places like China, India and so on.
Senators seek crackdown on Bitcoin currency
I'd say its called creating an analogy where one shouldn't. As a general rule, and maybe I'm too influenced by Dijkstra -- don't introduce metaphors/analogies where you can reasonably talk w/o one. In this case, no clarity was introduced by its addition.

It's like adding gravy to mashed potatoes. Sure it may make the potatoes taste better, but now you can't put the gravy back in the gravy bowl, can you?
Not to laugh too much, because I agree with you, but...

You do realize that what you're positing (giant work buildings, close together, with all needed facilities nearby and lots of intra- and extra- transit access to nearby housing) is what most of us call an "urban downtown area", right?

You don't need to invent this. People already figured it out.
Please someone create a bluetooth poker app like this! It would be a very expensive round of poker but imagine people sitting around peeking at their cards via their ipad. Brilliant.
Hi Sal,

The whole point is not who can make better video lectures. The point is why lecture at all?

I wish the world would see my YouTube video about Modeling Physics (and resources) here: http://bit.ly/ModelingPhysics

I wish the world would see my 13 other videos showing Modeling Physics in action: http://vimeo.com/channels/modelingphysics

I wish the world would read my post on pseudoteaching: http://bit.ly/MITpseudoteaching

I wish the world would read my posts on standards-based grading, which allows my students to show growth and mastery in physics: http://bit.ly/SBGposts

One of my pseudoteaching posts talks about how forward thinking universities like MIT (your alma mater) are switching from lecture-based physics to a more interactive model like Modeling. The research on Modeling is there, please don't ignore it: http://modeling.asu.edu/modeling/Mod_Instr-effective.htm

More research --> The 3 key principles from "How Students Learn: History, Mathematics, and Science in the Classroom" are:

#1. Engaging Prior Understandings - "If students’ preconceptions are not addressed directly, they often memorize content (e.g., formulas in physics), yet still use their experience-based preconceptions to act in the world.

#2. The Essential Role of Factual Knowledge and Conceptual Frameworks in Understanding - "What novices see as separate pieces of information, experts see as organized sets of ideas."

#3. The Importance of Self-Monitoring - "Appropriate kinds of self-monitoring and reflection have been demonstrated to support learning with understanding in a variety of areas. In one study,15 for example, students who were directed to engage in self-explanation as they solved mathematics problems developed deeper conceptual understanding than did students who solved those same problems but did not engage in self-explanation."

You can read the entire book for free: http://www.nap.edu/catalog.php?record_id=10126

Modeling Physics does all 3. Your videos are 0 for 3. Badges do not count as "self-monitoring" in any meaningful sense.

You also have no hard data (as of yet) as to the effectiveness of your videos. Just anecdotal comments from students. You have no controlled studies. In fact, controlled studies show that video lectures are rather ineffective. See Derek Muller's video abstract and research: http://bit.ly/KhanEffectiveness

I'm not trying to be mean. I think your videos can be a resource for some teachers/students. But using video as the primary method for content delivery is ineffective.

We should not have to "flip" lectures and HW in order for students to be more interactive in class. When inquiry is done right, the interaction is already built in.

I'll stop there, before this gets too long.

Thanks for your time,
Frank Noschese (aka torque2)
Entrepreneurial spirit? Needing to care for someone? Start your own senior care facility. Not wanting to wipe asses for the rest of your life? Create a patient database service and sell it to your competitors.
I'm glad they didn't, it's nearing finished product status (from my perspective) and I haven't seen a lot of innovation from them since inception... I'd like to love them more, but I just cant.

[note: I've developed multiple Shopify themes and Magento, admined a Magento store for 3 years, and developed some pretty custom things for both platforms. i am in both communities, or I like to think so...]
Ask HN: How do I meet a co-founder?
TL;DR I'm 18 and I need a co-founder but have no connections or knowledge

Let's ignore the fact that I have no real experience, startups are hard etc. but I really need a co-founder. Problem is, I'm a fairly good programmer, I can happily sit down and code pretty much constantly for months. But I need some help with my idea, I need a co-founder to help me out with some of the business stuff I don't understand, getting designers/other staff, helping with the pitches to investors and all that sort of stuff.
I have no real connections locally (All the work I've done has been with people from the US, I live in the UK), it'd need to be someone prepared to fully commit to the project and be enthusiastic.

What do you suggest? I've looked around, there are no "hackathons" near where I live, and even if I was to go to London they're not very often or as popular as the ones in the US. I don't really want to just start going round telling everyone my idea but I'm not going to get anyone on board looking for someone who want's to take part in "a secret project".

I'd be interested to hear your thoughts
-Sam
http://www.whywork.org/
I actually remember when he was announcing FaceTime, he had a list of all the FaceTime protocols and technologies onscreen - H264, AAC, SIP, IMTC, STUN, TURN, ICE, etc.

I remember him pausing, then saying something along the lines of "... whatever the hell those are", or some quip like that.
There are things that are baseline law and things that are above-and-beyond. Statistical analysis on usage patterns of your account appear to be above-and-beyond.

Your bank (a decent bank presumably) obviously gives a shit about this because they want customer loyalty which comes with not getting identity stolen and they don't want to pay up. However that is not the law.

There is no industry wide law that requires statistical analysis on financial transactions as a anti-fraud methodology. Frankly this bank may get hit with people pulling business from them because they don't protect their clients, but that is another story.
What really helped me understand Git was this 2-part tutorial that uses Gitk to show how your commits and merges work.

Part 1 - http://lostechies.com/joshuaflanagan/2010/09/03/use-gitk-to-...

Part 2 - http://lostechies.com/joshuaflanagan/2010/09/03/use-gitk-to-...

I'm surprised how few tutorials mention Gitk.
You can't change it from the inside. Writing a letter is a good thing (do it), but you can not make them change, and they likely won't. If you really, really want to spend time making change, you need to go to the highest level, ie. not the teachers or the directors, but whoever it is that they report to.

Probably the best thing to do: just make a site with some friends, http://dontgotoquebeqcegep.org or something, make sure it ranks above the school site (shouldn't be too hard) then move on.
For anyone who is familiar with the traffic patterns in and around Manhattan, a "mere mile" as the crow flies is a far stretch from reality. NYC is really a village... at 3am with no traffic. But when you need to navigate public transportation you will no doubt be left wanting wings.
Because, of course, the financial district is home to the hottest restaurants, lounges and nightlife....

The city should give up wasting time on banks and bankers and focus more on growing it's tech sector. Otherwise you're never going to find a Google, FB or Apple HQ in Manhattan.
It does not actually require Apple's Smart Cover; any of the third-party covers which are using magnets would work the same way. And there are already quite a few of those.
Tapping the screen eliminates the benefit of using the cover alone as input and makes handheld use of this app even more difficult.

One might not be able to keep score easily with paper flashcards, but that doesn't mean it's not useful. I'm not that familiar with handheld flash card app space, but I could see an app providing score tracking and more frequent interweaving of previously missed answers, and an overview of immediate feedback can be helpful.
See my post about the projects: they are very young, just little over half-year old - performance was not focus yet. I would definitely have them to be able to handle more data more efficiently, however, goal more on simplicity of use than on ability to process really huge amounts of data (like telco data - background where I come from).

Before I answer your questions (I assume that you are referring to Cubes - OLAP framework), I think it would be good to note, that Cubes has pluggable backends. Currently simple denormalisation-based SQL backend and MongoDB backend are implemented. I want to have them more advanced.

* Will data be fetched from the database for each query?

- currently yes, however we did some experiments with plain HTTP caching of Cubes/Slicer server and it worked pretty nicely for our current needs

* Is it possible to have dimensions with millions of values and expect reasonable query times?

- not tested yet

* Looks like it supports advanced topologies and hierarchies. How will dimensions with a high carnality affect performance?

- right, it supports hierarchies, however same as above: not tested yet for performance

I am open to any commeents/suggestions regarding the framework(s).

Stefan Urbanek, @Stiivi on Twitter (author of Cubes)
I should mention that one of the primary authors on the Cogent paper is a YC alum, Mike Miller, Cloudant (YC 07) Founder.
Definitely interesting insight regarding how people can hold a particular perception and how those perceptions need to be addressed. And although the focus is on science, it can equally be applied to any subject: English, history, math, etc.

With respect to the Khan Academy, it would be interesting to see tools that provide a kind of interactive exchange of preconceived ideas and then helping to break them down. Having tests after the exchange would then help provide great metrics on the retention and understanding of the subject.

In any case, 1veritasium has at least provided an thoughtful response to the Khan Academy. He recognizes a good thing but provide some nice constructive criticism that could certainly improve what the Khan Academy already could offer. So as someone who enjoys Sal's videos, this idea gets a +1 from me... You know, as just some random person on the Internet ;-).
Is it just me who shuddered every time when council leaders asked those completely off-topic idiotic questions? Free wifi, really?
I'm saying skip the lecture all together. It's not needed: http://bit.ly/ModelingPhysics
The degree of "personal responsibility" you're alluding to here is unreasonable to apply to a regional commercial construction firm. It is simply not feasible for most businesses to keep a password-only protected online bank login secure using general-purpose operating systems, and particular not with Windows.

You're commenting because you know that:

* The firm could have dedicated a machine to do nothing but provide access to the bank account, perhaps from a single-use VM

* The firm could have structured its bank accounts so that only a minimal amount of its cash flow would be exposed to any single compromise

* The firm could have aggressively monitored transfers in and out on a better than daily basis

I'm telling you that (a) getting these things set up is a 5-figure consulting project that no bank tells its client base it needs to do, (b) that it is vanishingly unlikely that the bank made sure the client was informed that it needed to take these steps, (c) that failing to do that and leaving accounts exposed only to simple passwords is probably an example of a failure of due care, and (d) that the simplest and most reasonable way to solve all of these issues would be for the bank to simply strengthen its authentication mechanisms for commercial accounts.
The causation goes the other way around though. Companies with precipitous stock drops are virtually always ones that had rapid growth leading up to the fall. Companies experiencing rapid growth generally need more space, and are more likely to "build a new campus" as a way to get that space.
Sounds like it's time to start from 0.

Location: You need to move far enough away from your parents that you don't struggle with their every decision, but close enough to react to an emergency.

Parents: Do NOT attempt to rule their lives. They don't want it and you won't convince them. They have to figure it out for themselves.

Job: You need to settle down and find a 9-5 job. You have nothing with which to start another risky venture, so you need to find a way to pay the bills while you recoup.

Innovation: Feel free to innovate on the side, but pay the bills first.
WordPress automatically create media_buttons for shortcode selection
Mozilla Firefox Mark Up
Choosing Silicon Alley Over Silicon Valley
Bitcoin bubble accellerating in June
Contract clauses that waive a bank's standard of due care for online security should not be enforceable. All sorts of other clauses are declared unenforceable all the time. This clearly should be one of them. It is practically the whole charter of a bank to protect funds from unauthorized access. If your contract waives that responsibility, you shouldn't be allowed to have the word "Bank" in your name.
Thanks for linking to the actual report. It is very long but worth skimming, as it covers issues and perspectives that most app developers don't even think about (for example, the pain of the Ovi 5 to 6 iterative review cycle process v. the mega downloads once it is on the Ovi store).
See my comment. This is all in the above-and-beyond category. HOWEVER note that the profits Blizzard is seeing from battle.net may be more than the profits of that entire bank. They have more clients, need a reputation, and are in fierce competition. That bank may not be.

It is overall saddening that Blizzard, a game company, protects user data better than a bank. HOWEVER note that this happened in 2009. I doubt Blizzard was this secure back then. Also iPhone and Android were not as big then as they are today, and they were more up-and-coming than anything.
When I'm programming, I like to call race conditions "dramatic irony."
Impulsiveness is flawed decisiveness
The facts of the case however are this:

1. There was an agreement between the two parties to use this service to access the accounts; it specifically covered the liability of the bank regarding this very situation.

2. At no time where the bank's existing systems compromised technically.

3. The transactions were completed in a manner that the owner of the account themselves did not notice for a period of time. That alone suggests that they were sufficiently "normal" that the bank could not detect them.

4. When the bank did become aware of the unauthorized access, it immediately acted and froze transactions in place and prevented all further transactions from occurring.

Because of all of this, there is simply no way you can find the bank acted negligently unless you just have a hate on for the banks. The only negligent party here was the plaintiff, and that's who should eat the loss.
I find being able to report right/wrong answers makes flashcard programs much more effective. Once you try a program like Mnemosyne or SuperMemo, you'll never go back to paper flashcards.

http://www.supermemo.com/english/ol/sm2.htm
If the theft was abetted by a product fault in the banks own code, my guess is that the client would get 100 + legal fees.
You are a very strong person - give yourself a huge amount of respect for having the courage to write this.

Reading this has brought back a whole lot of painful memories - I have been almost exactly where you are. Though exact circumstances were different, I know how it feels to be trapped between two unmovable forces.

When I was there, I started giving myself homework assignments. Basically, I turned self care into an entrepreneurial endeavour. For example, I literally forced myself to:

- start training for a marathon (Kanamekun gave you some amazing advice - physical exercise increases both dopamine and serotonin levels)

- start lifting weights three times a week (strength training is a great tool as you see small improvements constantly. For me, it was also a great opportunity to let out a lot of anger)

- keep a (private) journal and write a minimum of 500 words a day. Sometimes, my 500 words consisted of, "I hate my life and I want to die" repeated over and over again until I hit 500.

- start working on one small project that I always dreamed of doing but never had the time

Needless to say, I was in a really bad place and, if you want brutal honesty, I can say that I am a little surprised that I came out the other side. I found that these four pieces of homework built momentum and eventually I had enough momentum to get out of the pit.

Best of luck, I will be thinking about you, and if you need someone to talk to, just ask and I will put up some contact information.

You're strong and you're not alone.
"no tech scene, no innovators, no night life, no forward-thinking, no excitement."

Sounds to me like a blank canvas and opportunity to be a big fish in a small pond. Your town not being cool enough isn't a good excuse. It's like blaming a chair for making you sit in it.

If you are a true entrepreneur and have the ambition, you'll hustle up make things happen. In the meantime, lower your standards and take the next job that's offered to you.
A similar list for Mercurial, please?
Filmmaker Captures Raw Beauty Of NASAs Mission To Saturn
I think you need to take care of yourself before you can take care of others.
Even if you are very close to your parents and don't want to "abandon" them, the most immediate thing you can do is find a job that will give you financial and mental stability - you probably underestimate what it is you are able to bring to a company, and if you are willing to start somewhere with a clean slate there are probably a lot of job opportunities around.
You'll then be in a much stronger mental state, and will be able to look for ways to a)help them transition to a retirement home b)pay for someone to help them take care of themselves c)incorporate them into YOUR life, by inviting them to live with you in the future for example.
You need to find a purpose for your own life, and it is clear that you do not share the same "apathy" which you are finding in this new environment - therefore staying there can only lead to disappointment.
If in the short-term this means disappointing your parents, as sad as it is to say, they won't be around for ever, and disappointing yourself will have a much longer-lasting negative impact.
Take care.
I don't mean to paint all atheists with one brush, I'm just trying to explain (one possible) reason for why you can't have it both ways:

...it seems to me that non-religious people keep trying to simultaneously claim that the universe is merely a semi-random collection of atoms and energy, AND that we can find transcendent meaning in it.

So I interpreted that as the original non-atheist person meaning transcendental as metaphysical or supernatural in his statement.
Seed ball - Wikipedia, the free encyclopedia
Sal,
You wrote
>
Rather than wasting energy commenting on other people's work with pseudo-intellectual babble, why don't they produce their own videos and post them on YouTube?
>

Precisely! One of the things that appeals to me about your education model is its democracy. Anyone who wants to learn and commit the time for it is free and welcome to it.

The Education Profession has managed to create a number of gates and gatekeepers in an apparent attempt to control access to education and to control whom learns what. That model was somewhat shaken when the printing press was invented and then a little more with digital media and the internet. It maintains control through the accreditation business and the granting of degrees.

My kids have taken some online college courses and it appears that few traditional universities really understand how the make the most of online media, because those courses were so poorly conceived and executed. The Khan Academy is a stark and shining contrast to those.

A college degree remains, as the equivalent of yesteryear's high school diploma, the ticket to getting employed in many of the better jobs. It is my hope that someday there will be an open, free (or extremely low cost), accredited college degree program available to everyone who has access to internet!

I think it is awesome that a guy like Sal is the "rock star" of the future.
And here is the problem: YOU ARE POPULAR.

And because something is popular doesn't mean it's good. Take modern music. A lot of popular singers attract crowds of people and make tons of money. But very often the music just sucks. And people forget these pop idols as fast as they make new ones.
Not yet, I would like Brewery to be distributed, I had it in mind while designing it. See my general post about brewery.

@Stiivi - author of Brewery/Cubes
Natural Farming center
See the seafloor like never before on World Oceans Day
As far as I can tell, the suggestion that they might as well soon go about outlawing bartering is a sound one. Neither bartering nor bitcoins use US minted currency, both cannot be traced unless the participants volunteer that information, and both arguably can be used for "tax evasion". I'm not trained in tax law, but it wouldn't really surprise me if legally citizens were mandated to report barters on their taxes.

Furthermore, both can be used to acquire drugs. Of course, bartering is at this point far more popular for that...

"Misspelling."

Seriously dude? This isn't slashdot.
All major banks have systems whose job is to have a notion of normal and abnormal transactions. Any bank operating at the level of the majors should be able to pick out the $100k electronic funds transfer, which is probably the only customer-not-present paperless ACH transaction of that size in the history of the relationship for a regional construction firm, and require callback authorization for it. That's all they had to do.

The point isn't that the bank should be universally responsible for fraud. It's that the responsibility for fraud does not end exactly at the login prompt.