Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
For the out-of-band Slashdot experience (mostly headlines), follow us on Twitter, or Facebook. ×
User Journal

Journal: Why libressl is stupid 2 2

I really want to like libressl. But it pretends to be openssl badly. They refused a patch that would have mitigated this whole RAND_egd problem by simply returning that it doesn't work when someone tries to use it, which means that you commonly need a patch to use it at all. If it's not going to work like openssl, then it shouldn't occupy the same space in the filesystem.

User Journal

Journal: Two minutes of euuugh 2 2

Chrome's new bookmark manager is definitely a poster child for "half-ass it then push it to the masses". It seems to be working hard to almost replicate the Windows 8.0 Metro interface that everyone loved down to the "checkmark a tile to open the menu".

Tips:

If you want to make a new folder, go to the folder you want it to be in and press the NEW button on the left outside of the folders, there's no button for it on the right inside the folder (but there is a button to delete the entire folder from inside the folder).

If you want to drag items into your new folder, drop them quick. If you hesitate Chrome decides that you are re-ordering the items and you want the bookmark to go before the folder even though your mouse is directly over the tile.

If you have nested folders, opening a subfolder seems to randomly display all the elements in the center of the screen where you can't click on anything because its all on top of each other. Sometimes. There's no tree view of nested folders. Top level folders are on the left, after that you have to drill down individually.

No right clicking. Haven't you heard that there's no way to right click on a tablet?

When you checkmark a folder you don't get the option to edit its name or description. You have to open the folder then rename it from the inside.

User Journal

Journal: OMFG GNOME3 is asstacular

This is not news to most people, but I just tried it for the first time on my first-ever normal Debian Wheezy install (I've always done minimal, netinst etc. and built it up from there for a purpose) and wow, GNOME3 is amazingly horrible. It makes Unity look usable. If that was the idea, mission accomplished, I guess.

User Journal

Journal: What do I have to enable now? Fucking DICE. 5 5

Welp, I can use Slashdot in Chrome and not in Firefox, which implies that something I'm blocking in Firefox is preventing the new improved Slashdot from working. What new spyware bullshit do I have to enable to use Slashdot now? Thanks, DICE! You'll run this place the rest of the way into the ground any day now.

User Journal

Journal: Keep burning those modpoints, punk 4 4

http://slashdot.org/comments.pl?sid=6928647&cid=49008431
http://slashdot.org/comments.pl?sid=6921395&cid=49008481
http://slashdot.org/comments.pl?sid=6928395&cid=49008511
http://slashdot.org/comments.pl?sid=6928647&cid=49008549
http://slashdot.org/comments.pl?sid=6921395&cid=49008565

User Journal

Journal: Yay, I made an idiot angry! 8 8

Then they modded down five of my comments in a row. Why doesn't the system catch this kind of obviously abusive moderation? Oh right, because this is slashdot, not someplace with competent employees.

http://slashdot.org/comments.pl?sid=6897301&cid=48979217
http://slashdot.org/comments.pl?sid=6897699&cid=48979955
http://slashdot.org/comments.pl?sid=6898589&cid=48984949
http://slashdot.org/comments.pl?sid=6904433&cid=48985865
http://slashdot.org/comments.pl?sid=6904445&cid=48986419

If moderation on slashdot were intelligently designed, this person's abusive moderation would have been autodetected and they would have been banned from moderation permanently.

User Journal

Journal: 0.38 Seconds of Hate 2 2

For the love of all that is holy, please do NOT automatically select shit from a dropdown list if I'm typing and a dropdown opens up underneath where the mouse pointer just happens to be idling on the screen.

Chrome: This. Means. YOU.

User Journal

Journal: Chances of being killed by police in the USA

So 104 people were killed by police in the USA during August, 2014. To my eyes, that's an absolutely enormous figure. As a Brit, I compare it to the 1 person killed over 3 years by the UK police. Yes, they're two different countries, yes there's a lot more people in the US, yes they have different cultures, yadda yadda yadda; people are dying here.

Let's do some maths:

  • Population of the USA: 319 million (source: http://tinyurl.com/bpotuf9)
  • Percentage chance for a person to be shot in August is then: (104 x 100%) / 319,000,000 = 0.000033%

That's a scarily huge percentage, given that it's normalised by population. Bear in mind that police in the USA are not ... shy ... at shooting at suspects, and neither are they 100% accurate. Some of the casualties are in fact bystanders.

Now let's consider extrapolating for the period of time that most shootings occur (i.e.: suspect between the ages of 15 and 40), and see how that changes things:

  • Chance to be shot over 25 year period = (104 x 12 x 25 x 100%) / 319,000,000 = 0.0097%
  • Rounding that, since this is an extrapolation, we get 0.01%

Now that's an amazingly large percentage chance of being shot dead by a policeman. Let's do the same thing for the UK:

  • Population of the UK: 65 million (source: http://tinyurl.com/kzsalbe)
  • Percentage chance for a person to be shot over last 3 years is then: (1 x 100%) / 65,000,000 = 0.0000015%
  • Therefore percentage chance for a person to be shot in August 2014 is 0.0000015 / 12 / 3 = 0.0000000427%
  • Therefore percentage chance to be shot over 25 year period is 0.0000000427 x 12 x 25 = 0.0000128%

Compare 0.01% and 0.00001% and remember these are normalised by population. Yeah.

User Journal

Journal: Holy shitballs, slashdot. Malicious ads being served up.

Love is over.

I was redirected to http://java-update-us.com/index.html?sid=42&aff_sub=wb-playanma-us&aff_sub2=am1&aff_sub3= which dropped a java_installer.exe into my Downloads folder from some ad playing on http://science.slashdot.org/story/14/07/24/1357256/empathy-for-virtual-characters-studied-with-fmri-brain-imaging around 2:30PM central time 7/24

User Journal

Journal: 2+ port router+asterisk server? 14 14

I need a new system on which to run asterisk, bonus points if I don't have to configure it from scratch. I'd like to spend less than $200 (ideally I'd pick up something used if necessary for $100) but I have storage devices available, whether CF, SD, USB, or what have you. It can have wireless, but it doesn't have to because I have a routerboard for that. I have found my pogoplugs to be unreliable at best.

User Journal

Journal: Soylent News 4 4

I've not been posting on Slashdot much this week, because I've been trying out Soylent News, which is using (and old version of) Slashcode (with some improvements) and lacks corporate overlords. It seems to have captured most of what I like about discussions in Slashdot, although is suffering slightly from not having nearly as many active users (50 or so comments is still the norm and it probably needs 100+ to be sustainable).
If you've not visited yet, I'd recommend giving it a go.

I'm TheRaven over there.

User Journal

Journal: Continuation on education 13 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!

Without life, Biology itself would be impossible.

Working...