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User Journal

Journal Journal: Annual check in 15

Hey, Slashdot was instrumental in finding Twue Wuv for me, so I couldn't possibly leave it forever. The 14 day comment limit, however, is unfortunate for those of us who stop by only every 6-9 months. :^)

I have read your updates and am interested in your lives and would love to leave a comment expressing as much.

So, hey, Red5, congratulations on the marriage and baby and stuff! And all the other babies that have happened in the past 5 years or so for everybody else! And marriages! And diplomas! And new jobs! And sorry/congrats about the divorces!

User Journal

Journal Journal: When Did 'Beta' Become A Dirty Word On /. ? 5

Just spotted that people are stuffing comments into various stories here for the sole purpose of complaining about the /. Beta.

Maybe it's because I only occasionally visit here, but are people really that hung up on the current design?

Hell, I can remember when /. didn't even bother with any testing, period, just shoved changes straight onto the production servers. Fun times. (Not)

Having looked at the Beta, it seems to me a damn sight cleaner that some news sites I can think of*. Ok, the comment view controls could use some refining, but that's the whole point of beta-testing, right?

(*I still have nightmares about pre-2000s ZDNet. Makes the current design look almost pleasant by comparison.)

User Journal

Journal Journal: I'm 0x30 years old... 9

Turned 0x30 on Christmas Eve. That sounds better than 48. I expect to start acting 20 when I hit 50.
insert goatse link here.

User Journal

Journal Journal: WTF? 1

leto:/stuff% mkdir mp3
mkdir: cannot create directory `mp3': No space left on device
leto:/stuff% mkdir qwe
leto:/stuff% mv qwe mp3
leto:/stuff% ls -ld mp3
drwxrwxr-x. 2 tet tet 4096 Dec 22 20:53 mp3
leto:/stuff% df -h .
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/leto-stuff 30G 9.9G 19G 35% /stuff
leto:/stuff% df -hi .
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/mapper/leto-stuff 1.9M 322 1.9M 1% /stuff

This appears to be 100% repeatable behaviour.

User Journal

Journal Journal: Continuation on education 13

Ok, I need to expand a bit on my excessively long post on education some time back.

The first thing I am going to clarify is streaming. This is not merely distinction by speed, which is the normal (and therefore wrong) approach. You have to distinguish by the nature of the flows. In practice, this means distinguishing by creativity (since creative people learn differently than uncreative people).

It is also not sufficient to divide by fast/medium/slow. The idea is that differences in mind create turbulence (a very useful thing to have in contexts other than the classroom). For speed, this is easy - normal +/- 0.25 standard deviations for the central band (ie: everyone essentially average), plus two additional bands on either side, making five in total.

Classes should hold around 10 students, so you have lots of different classes for average, fewer for the band's either side, and perhaps only one for the outer bands. This solves a lot of timetabling issues, as classes in the same band are going to be interchangeable as far as subject matter is concerned. (This means you can weave in and out of the creative streams as needed.)

Creativity can be ranked, but not quantified. I'd simply create three pools of students, with the most creative in one pool and the least in a second. It's about the best you can do. The size of the pools? Well, you can't obtain zero gradient, and variations in thinking style can be very useful in the classroom. 50% in the middle group, 25% in each of the outliers.

So you've 15 different streams in total. Assume creativity and speed are normally distributed and that the outermost speed streams contain one class of 10 each. Start with speed for simplicity I'll forgo the calculations and guess that the upper/lower middle bands would then have nine classes of 10 each and that the central band will hold 180 classes of 10.

That means you've 2000 students, of whom the assumption is 1000 are averagely creative, 500 are exceptional and 500 are, well, not really. Ok, because creativity and speed are independent variables, we have to have more classes in the outermost band - in fact, we'd need four of them, which means we have to go to 8000 students.

These students get placed in one of 808 possible classes per subject per year. Yes, 808 distinct classes. Assuming 6 teaching hours per day x 5 days, making 30 available hours, which means you can have no fewer than 27 simultaneous classes per year. That's 513 classrooms in total, fully occupied in every timeslot, and we're looking at just one subject. Assuming 8 subjects per year on average, that goes up to 4104. Rooms need maintenance and you also need spares in case of problems. So, triple it, giving 12312 rooms required. We're now looking at serious real estate, but there are larger schools than that today. This isn't impossible.

The 8000 students is per year, as noted earlier. And since years won't align, you're going to need to go from first year of pre/playschool to final year of an undergraduate degree. That's a whole lotta years. 19 of them, including industrial placement. 152,000 students in total. About a quarter of the total student population in the Greater Manchester area.

The design would be a nightmare with a layout from hell to minimize conflict due to intellectual peers not always being age peers, and neither necessarily being perceptual peers, and yet the layout also has to minimize the distance walked. Due to the lack of wormholes and non-simply-connected topologies, this isn't trivial. A person at one extreme corner of the two dimensional spectrum in one subject might be at the other extreme corner in another. From each class, there will be 15 vectors to the next one.

But you can't minimize per journey. Because there will be multiple interchangeable classes, each of which will produce 15 further vectors, you have to minimize per day, per student. Certain changes impact other vectors, certain vector values will be impossible, and so on. Multivariable systems with permutation constraints. That is hellish optimization, but it is possible.

It might actually be necessary to make the university a full research/teaching university of the sort found a lot in England. There is no possible way such a school could finance itself off fees, but research/development, publishing and other long-term income might help. Ideally, the productivity would pay for the school. The bigger multinationals post profits in excess of 2 billion a year, which is how much this school would cost.

Pumping all the profits into a school in the hope that the 10 uber creative geniuses you produce each year, every year, can produce enough new products and enough new patents to guarantee the system can be sustained... It would be a huge gamble, it would probably fail, but what a wild ride it would be!

User Journal

Journal Journal: I am a masochist 5

I'm a masochist. No, not of the sexual variety. Of the slashdot variety. For some reason, not only do I still continue to read this site, I click on links to stories about cars and phones. The raging stupidity and arrogance is amazing.

And yet I come back.

User Journal

Journal Journal: Obama Lied About Benghazi 8

Some people don't know that Obama lied. But it's obvious fact based on the evidence. In another discussion some apparent trolls were complaining about the claim, but I am uninterested in discussing it, but for those who are interested, the basic summary is this:

* The administration said, for weeks, that the video and the unrest around it was a cause of the attack on the embassy in Benghazi.

* They claimed that the evidence led them to say so.

* They have never provided any such evidence. Some of what they claimed happened -- such as protests existing at the embassy in Benghazi -- was false, and there was never any evidence it was true (maybe in the first hours, but not after the first days).

* There was much evidence, even in the first days, that the attack was preplanned, but it was ignored in favor of the nonexistent evidence of spontaneity.

* The documentary evidence shows that, from the beginning, they had evidence that it was preplanned, and the only "evidence" of spontaneity cited was that it happened soon after protests in Cairo.

Draw your own conclusions, but I do not believe that the President would say it was a spontaneous reaction to the video without some evidence of it, and he had none. He said it because he thought it was believable and wanted to win an election, and if it were preplanned then it is a failure of his administration.

If you want more, check out last week's 60 Minutes report by Lara Logan. Most of it has to do with showing that we a. knew the attack was coming and b. didn't take reasonable steps to prevent it.

User Journal

Journal Journal: Flying Visit 4

Yep, /. is just as UI-fugly as I remember it. :P

-MT.

Cloud

Journal Journal: On the dreaded phrase: "I have an idea for an app" 9

In the past few weeks different people came to me with the dreaded phrase: "I have an idea for an app". If you feel targeted, you probably are, but you're not the first, and you won't be the last. Some even trusted me enough to tell me what their great idea was. Many, though not all, couldn't code their way through a paper bag and thus they look for someone "to code the app for free".

You even might find someone like that, and if you do, it's someone with a lot of time on their hands like a student with not much experience.

What those ideas (if I get to hear them) all have in common is that they need infrastructure behind it. Uploading pictures, movies, heck, even simple text need a place to be stored. That's definitely not your phone, especially if others need to be able to access it. Yeah, you can start off with hosting a little database and web front end on your DSL line (if you have one), but in the long run this will require some serious money. I'm not even talking about the people managing and creating it for you. I'm just talking about bandwidth, storage, electricity.

So, if you have an app idea, assess where you want to store what: if you have no concrete answers to those questions, shelve your idea until you do.. An app is nothing magical, it requires real resources, real work and thus real money.

User Journal

Journal Journal: Am I a Windows 8 Hater? 3

Mystikkman claims that I've been posting messages perceived as unjustly hateful toward Microsoft. I would prefer to express my feelings without hate, but sometimes I have the wrong idea of what is hate and what isn't. Please point out which of my comments are hateful and why so that I can understand how not to post next time.

Security

Journal Journal: LuxTrust on Ubuntu 12.04 LTS 3

Intro: I was complaining on social networks that the LuxTrust hardware tokens are forced upon all teachers in my country. That's a huge problem because I got my mother in law on Linux and this thing is very very badly supported. Officially the website say "Ubuntu 10.04" supported. Funnily enough, their website also doesn't mention Windows 8 as supported. Anyway, they're a useless company in my eyes... I wish them the most ill possible.

Here is my little test run:

So, I decided to test the LuxTrust support under Ubuntu GNU/Linux 12.04 LTS i686[1]. I installed a virtual machine from the ISO, and from that blank slate, I wanted to try how "easy" this is. Well, there you go, I downloaded their "middleware".

The good news: Ubuntu Software center presented it as installable and it installed it without apparently problems after clicking the Install. Good! If this were enough, I'd say "it's supported"[2]. Let's test it. So, I go to CCP-Connect, one of the few banks known to work well with LuxTrust under Linux. The thing needs Java[3], and I as expected, and I don't have it installed. I get redirected, at once to http://www.oracle.com/java. The sheer number of options is intimidating. If I weren't very familiar with Java, I wouldn't have a clue what to select. Now, this might be P&T Luxembourg doing it wrong, but the site you should send end-users to is http://www.java.com/. Never send an end-user to a developer site, it's a horrible mistake.

Anyway, I do what is needed and surprise[4], there is no Oracle Java for Ubuntu. A RPM and a tar.gz. Now, if I weren't who I am, I would be blocked again. So, I download the tar.gz and I'll be honest to you, dropped right to the command line, tar zxvf later to /opt, and doing an update-alternatives --install of the new java, oh, and while we're at it, make a symlink for the plugin [5]. Now, of course, I understand it's Oracle whom I have a problem with, but I bet that you won't get this documentation at LuxTrust and they sure as hell can't walk you though this. Of course, the way I did this, I'm now responsible for updating my Java. Of course, there is a PPA, but can I trust that? (I'll have to, if I want automatic updates, but you get the point, no?)

Now, going back to the banking site, it seems to run. I get to the point where I have to select their product and then a screen saying there is no signing stick. (Obviously, I don't have one.)

For kicks 'n giggles, I tried OpenJDK/JRE with the icedtea plugin. No surprise, but that doesn't work: gray pane instead of the applet, but other java applets works fine. So, Oracle Java mandatory. Heck, even Minecraft runs op OpenJDK for crying out loud!

At least their middleware didn't install some kind of daemon, which I what I would have expected with something called "Middleware".
Funny also: The Oracle Java VM warns you from running applets all the time, even the test applet on the java.com site. Scary. Well, not to me, but to a normal end user.

[1] i686 for a good reason, from what I read getting it to run is significantly harder on amd64.
[2] I knew that it wasn't going to work
[3] Wait, isn't that what dependencies are for... Naaaah, dependencies. Who uses that?
[4] Not really, I've been here before
[5] Probably better use update-alternatives for that one too!

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