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On several occasions I have watched part of a TV documentary on gifted children, but I have never been able to watch one completely because every one that I have seen has been offensively wrong.
One thing that they always seem to do is say that gifted children have special needs and often claim that they have problems socialising. This sounds quite reasonable, but if that’s the case then why would you make such children perform tricks on TV? Putting the children on TV is a very poor example of journalism and often of parenting – the parents’ desire to boast about their children’s performance (and implicitly their own parenting skills) is apparently more important than protecting the children. I think that the only situation in which gifted children should have their talents demonstrated on TV is if their skill is related to the performing arts. Not that TV coverage is necessarily good for children who have abilities related to performing (a casual scan of the news regarding adults in Hollywood shows the problems that people have dealing with fame), but it’s something that they will be driven to anyway.
Also if they are going to demonstrate the intelligence of a child on TV then they really should make sure that they don’t demonstrate a lack of intelligence (on the part of the child as well as the producers). Asking a child to provide a definition of a word is often used as an example of intelligence (when it’s really an example of vocabulary). In one documentary a child defined a philanthropist as “someone who has a lot of money” (according to dict on my system it is “Love to mankind; benevolence toward the whole human family; universal good will; desire and readiness to do good to all men“). In another a child defined a genius as “someone who knows a lot“, while the definition of genius is not clear and there is some disagreement about what it is, most people agree that it’s about ability not knowledge. Being able to recognise when you don’t know something and admit would surely be correlated with intelligence…
Telling a child that they are a genius or telling them their IQ seems like a bad idea at the best of times, and doing so in front of a documentary camera crew isn’t the best of times. Children are able to determine how their skills compare to others, there are more than enough attitude problems in schools related to skill comparisons without encouragement from adults. When I was in high school a friend who studied a martial art refused to tell me which belt he wore – he had been taught that such things shouldn’t be discussed outside the dojo to avoid creating a hierarchy based on belt rating in the community. I think that the same thing could be applied to IQ ratings.
The term genius is grossly overused generally, I believe that showing greater than average ability in one area is not enough to qualify. I think that the minimum criteria would be to produce dramatic new developments/inventions in one area of research (EG Albert Einstein or Stephen Hawking) or to advance multiple fields of science or art (EG Leonardo da Vinci) would be the minimum criteria. I had people call me a genius when I was young because I won prizes in maths competitions, was good at programming computers, playing chess, etc. The main criteria for achieving such things is to avoid wasting time on sport – in a school run by idiots with a focus on sport this was more a tribute to being stubborn than being smart!
The TV documentaries mention many things that gifted children supposedly require, but strangely I don’t recall any of them mentioning the need to meet adults who are significantly smarter than average! You might think that this is the most obvious thing. The Big Brother and Big Sister programs of mentoring children who are at risk of crime and drugs apparently provide significant benefits, something similar for gifted children might do some good, probably more based on meetings of a few intelligent adults with a small group of intelligent children instead of the BB-BS model of one-on-one meetings. Washingtonienne seems like a good example of the need for this.
There are some useful print articles however, this article in The Age makes some good points, it’s particularly interesting to note that some schools lie about special programs to support gifted children to attract students (someone should name the schools that do this).
But then you get awful ones like this, naming the child in such a situation is irresponsible journalism. The girl in question may be forced to change her name to escape google when she’s older. It’s strange that it’s illegal to name a child who is involved in a court case but it’s not illegal to name them in such an article (let’s hope that the journalist used pseudonyms). Also you might expect an organisation such as Mensa to have someone smart enough to realise that bringing such attention on a 2yo is not in the child’s best interests.
Does anyone know of a good TV documentary about gifted children? I guess that it would be extremely difficult to make one without showing the children on TV so that would restrict the film maker to children who’s abilities are related to the performing arts.
In a comment on my post about memory errors Chris Samuel referred me to an interesting post on the Beowulf mailing list about memory errors. In that list posting Joe Landman says “it is pretty easy to deduce which chip is problematic (assuming it is ram) based upon the address” and then describes how to use Machine Check Exception (MCE) data from an error detected/corrected by the ECC system.
Damn the vendors of motherboards for switching to 8-bit RAM just when it was about to be useful to have 9-bit RAM!
286 class machines had 9 bits of RAM per byte with one bit used for parity. Parity errors were extremely rare, largely due to the fact that memory errors could affect more than one bit at a time and therefore would often give a correct parity – if multiple bit errors were totally random then parity might be expected to pass 50% of the time! The Pentium was the first commonly used CPU to operate with a 64bit memory bus. If it had 9 bits per byte it would have had 72 bit wide memory buses – a Hamming Code could use this to detect and correct single-bit errors, detect all double-bit errors, and detect some errors involving more bits. This would mean that some errors would be recoverable and would display the location of the memory problem instead of being fatal and giving no information.
Now it’s become a standard feature in servers to have ECC memory (at significantly greater cost) and most desktop machines don’t have ECC support – I wonder whether this is aimed at price-gouging people who need reliable servers (they can’t use cheap RAM from desktop machines).
Unfortunately due to issues of electricity use, noise, and price I have to run all the servers that are most important to me on desktop PC hardware. Is anyone selling ECC RAM in desktop systems? I am particularly interested in machines that are a couple of years old so I can get them cheap at auction…
On Thursday I bought a $99 (discounted from $199) MP4 player from Aldi (a German supermarket chain that has recently opened up here). The player is a Tevion model M6.
By a long way it’s the cheapest and nastiest piece of consumer electronics that I have ever owned. It has very flimsy construction (feels like it will crumple in my pocket – not like a solid iRiver) and poor design all around. The viewing angle of the LCD screen is very small, so if I hold it close to my face then the viewing angle will be wrong for at least one eye. There are two power switches, an electronic one on the top (which is also sometimes used as an escape key for menus that don’t recognise the key labelled as ESC) and a slide switch at the side. When I use the electronic switch to turn the power off the back-light will usually flicker – I guess that they wanted to have an electronic switch and then put a mechanical switch in the design when they couldn’t get it working.
The menus are strange, they have a game menu that only has Tetris – why not have a Tetris menu instead?
The FM radio function doesn’t seem to work and the option to select a European frequency range is lost when the power is cut, along with all saved station frequencies.
I never got around to testing the voice-recording function (one of the reasons for purchasing the device) as it failed in too many other ways.
The device has an AVI of Barbie Girl by Aqua and also a MP3 with a text file that has the lyrics for Karaoke, this is probably the only good feature of the device. Unfortunately it appears to have some sort of DRM as it gave a padlock icon and stopped working after I played it a few times (fortunately it’s unable to store settings so a power cycle solved that problem).
When I connected it to my PC via USB it showed two devices, /dev/sda and /dev/sdb. /dev/sdb gave an IO error (apparently due to not having an SD memory card installed) and and /dev/sda was not in any format recognised by file -s /dev/sda.
I’m going to have to return this, even $99 is too much for a device of such quality. Maybe I’ll buy an iRiver to do this if they sell one without DRM.
Early this year I deployed a server. As part of my normal procedure I ran the Memtest86+ memory test program (which showed no errors) before deploying it. After some time running the machine started to become unreliable, yesterday it crashed twice and I had to replace it. I ran Memtest86+ before removing it from where it was installed and found several memory errors. When a server crashes I highly recommend running Memtest86+ before removing it so that you at least know the cause of the problems.
As I want to use the machine elsewhere I want to discover the cause of the problem. The machine has two DIMM sockets (I’ll call them A and B) and two DIMM modules (again I’ll call them A and B). After getting the machine home I first tested the machine with DIMM A in socket A (and DIMM B removed) which passed, then I tested it with DIMM A in socket B which also passed. I removed DIMM A and tested DIMM B in each socket and those tests passed. Then I installed both DIMMs and again the test passed!
I now realise that I made a mistake in removing a DIMM when I got the machine home. I should have tested it again with the DIMMs in place. If the problem was due to heat or a poor contact made worse by vibration then the problem might have gone away during the trip home – it would have been handy to know that I would be unable to reproduce the problem! My mistake here was to change multiple factors at the same time. When diagnosing faults you should try to change one thing at a time so that you will know what fixes it!
Now, I am wondering what I should do next? Assume that it was just a bad contact and put the machine back in service? Suggestions appreciated.
An issue that causes some discussion and debate is the number and type of questions that may be asked during a lecture. In a previous post giving advice for speakers I suggested that questions can be used as a mechanism for getting a talk back on track if a nervous speaker starts presenting the material too quickly (a common mistake). This mechanism can be used by the speaker if they realise that things aren’t going to plan or by audience members who are experienced speakers and who recognise a problem. Due to this a blanket ban on questions during a talk will only work with experienced speakers who have planned their talk well.
There are different styles of presentation favoured by different speakers. Some are determined by the nature of the topic (an example that I have seen cited is topics that are very contentious which would lead to a debate if questions were permitted during the talk), but for computer science I think that questions during the talk can always work well. To a certain extent the fact that code either works or doesn’t limits the scope for debate.
Probably the major factor that determines the utility of questions is the size of the audience. If you have an audience of less than 50 people then a conversational approach can work, if you have less than 200 people then a reasonable number of questions can be accepted. But as the audience size increases above 300 the utility of questions approaches zero. If the majority of people who might want to ask questions are unable to do so due to lack of time then the value of allowing any questions diminishes. For the largest audiences there probably isn’t any point in having question time.
Another major factor determining which style works best is where the speaker has had experience speaking. Most of my speaking experience is with less formal meetings (such as local LUGs) and in countries with an informal attitude towards such things (Australia, the US, and The Netherlands). A speaker who has primarily spoken for universities such as Cambridge or Oxford (which seem to have a very formal style and questions strictly reserved for the end) or who has come from a country such as Japan(*) where it’s reported that the audience are obliged to show respect for the speaker by being quiet will probably expect questions only at the end and may flatly reject questions during the talk. A speaker who has a background speaking for less formal audiences will expect a certain number of questions during the course of the talk and may plan the timing of their talk with this in mind. When I plan a talk for a one hour slot I plan at most 30 minutes of scheduled talking (IE covering my notes) expecting that there will be 15 minutes of questions along the way and another 15 minutes of questions at the end. Often with such plans my talks run over-time. Of course this means that people who have mostly had experience speaking to smaller and less formal audiences will find it exceedingly difficult to give talks to larger audiences. This may be an incentive for having more formal arrangements for LUG talks to increase the skills of speakers.
The next issue is what level of contentious questions is acceptable. I believe that if you have a disagreement with points that the speaker is making (and have some experience in the field in question) and the audience is not particularly large then one hostile question is acceptable – as a speaker it’s reasonable to refuse to take any further questions from an audience member who has asked one hostile question. Another category of question is the challenging question (not to be confused with a hostile question), for example describing in one sentence what your business requirements are and asking how the topic being discussed will apply to that business requirement. One of the most useful questions I have been asked during a SE Linux talk was concerning the issue of backups of file security contexts, it was presented in a challenging way and the answer that I gave was not nearly as good as I could give now (the code base has improved over the last few years in this regard) – but I think that everyone learned something so that validated the question.
In smaller groups there may be some heckling when the speaker is a well known member of the group, I don’t think that this is a problem either as long as it only consumes a tiny fraction of the time (maybe 20-30 seconds at the start). For larger audiences or for speakers who don’t know the audience well heckling is generally a bad idea.
(*) When speaking in Japan I had a lot of audience interaction. I’m not sure if this is an indication of the Japanese culture changing in this regard, the fact that translation problems forced some interaction, or the audience was showing respect for the Australian culture by asking questions.
As part of my ongoing plan to make things easier for Linux job applicants and advertisers I have created a Planet for Linux Jobs in Victoria, Australia.
The LUV President had suggested that I make a proposal to the LUV committee about this. I have offered them ownership of the Victorian aspects of this idea as well as volunteering to run the services for them.
The Libby commutation has demonstrated the contempt that the Bush regime has for the US political process, the opinions of the voters and party members, and the reputation of the US. The Talking Points Memo has an insightful analysis. They suggest that an argument could be made for pardoning Libby by claiming that the case is politically based and bogus, such an argument would be difficult to sustain – particularly given the fact that the prosecutor and the judge were Republican appointees. But a commutation is admitting that the case was valid but that Bush wanted to protect a friend – or someone who might inform on him. In either case it’s a very bad thing.
As an example here’s a YouTube video of Keith Olbermann making the case for George Bush to act as decently and honourably as Richard Nixon and resign from office.
Paul blogs about why embedding media players is bad for the case of web radio. One thing I notice is that there is no convenient or easy way of extracting an embedded youtube video from a web page a quick test in my favourite browser (Konqueror) showed that the YouTube embedded section didn’t even appear.
The Debian package youtube-dl allows you to download the Youtube content in a format that can be played with mplayer, but only if you see the link – which seems to not happen if the web site tries to embed it. Avoiding flash is good if you want security or if you want to use a platform other than i386 Linux or Windows and youtube-dl removes what I consider to be the only compelling reason for Flash.
Mary Gardiner has written a lazyweb post asking about how to solve the problem of laptops being more expensive in Australia than in some other countries. She didn’t post contact details or enable comments on her blog, but that’s OK as this information may be useful to other people.
Some years ago I was living in The Netherlands and discovered that the cheapest Thinkpads were available by US mail-order (which didn’t support shipping to other countries). As I was attending a US conference (the Colorado Software Summit) anyway I decided to get a Thinkpad at that time. So I found an friend in the US who was attending the same conference who was willing to receive the Thinkpad for me. I arranged to have the Thinkpad delivered to his doorstep (he assured me that he lived in a safe neighbourhood) and a couple of weeks afterwards I met him at the conference and received my nice new Thinkpad!
I’m sure that most people who are active on the net can find someone in the US who they would trust to deliver them a package costing >$1000 and finding such a person who attends the same conference as you shouldn’t be too difficult (I’ve done it).
Another way I bought a Thinkpad was that I arranged to have a holiday in London at the same time as the wife of an American who ran a computer store. I met his wife at Heathrow airport and made the final cash payment for the Thinkpad that she delivered. I was worried about a police reaction to seeing a cash sale of a parcel in an airport, but there weren’t any problems…
In terms of warranties on laptops, the Thinkpad warrantee is world-wide. You can quote a serial number of a Thinkpad when arranging the warranty repair and they will tell you which country it was purchased in, but they always cover you. I’ve had many Thinkpad repairs, I wear out keyboards regularly through constant use, and due to the extensive travel and hard wear often other parts wear out too. It’s been pretty rare for me to have a warranty repair in the country where my Thinkpad was purchased and I’ve never had a receipt available. It’s never been a problem, they know from the serial number whether the warranty is valid and take care of everything.
Thinkpad repair (both under IBM and now under Lenovo) also operates when there is no hard drive in the machine. They don’t even ask a question about the lack of a drive, just note that it doesn’t have one.
Update: It has been pointed out to me that importing a laptop without paying tax on it is illegal in most places. But of course if you pay the tax then the total cost will probably be about the same as buying it locally.
Google has just announced the Recharge project. They are converting some of their own fleet of Prius and other hybrid cars to be “plug-in hybrids”, this means that the car can be plugged in to mains power to charge it’s batteries and petrol will only be used as a fuel of last resort. If a car is mostly used for short trips then the petrol use is dramatically reduced – but the car still has the 1000Km range that a full tank of petrol provides!
Google is also going to invest $10,000,000 in companies that develop technologies related to hybrid vehicles. If you have some ideas for new technological developments related to power saving then you might want to check out what Google is doing.
The Age has published a remarkably stupid article about terrorism titled “It’s hard to prevent the hard to imagine” which contains some amusing statements such as “a plan to use liquid explosives hidden in soft-drink bottles and destroy commercial jets crossing the Atlantic. The scale of this plot, combined with the innovative bomb design, threatened to kill thousands of people and cause massive disruption to global commerce“. This however has been debunked by many chemists, here is one of the many expert analysis of the claims.
Here’s another inane claim from The Age “So the perpetrators in the UK looked elsewhere and compiled a crude yet potentially deadly bomb from materials available in everyday life — a mix of gas cylinders, petrol and nails. Finding a way to govern access to such otherwise mundane items will be expensive, and perhaps ultimately, impossible.“. It’s surprising that The Age editorial team were unable to find someone who knows the basics of chemistry or who has ever had a need to start a fire to review the article. Everyone should know that an oxidising agent is necessary for combustion – and a huge quantity of an oxidising agent is needed for an explosion. Petrol vapour won’t ignite if it’s too concentrated (it can displace enough oxygen to prevent combustion). When a gas cylinder is damaged and set alight you get a fireball surrounding it which may be several meters wide (the one occasion that I witnessed a damaged gas cylinder on fire the fire-ball was about 4 meters wide). But no explosion. To propell nails or other solid objects you need the combustion to be rapid and only on one side of the object. Combustion on all sides (IE a 4 meter wide fire-ball) will not propell nails. Here’s what a British Army bomb-disposal operator has to say about it in The Register.
If you want to talk about dangerous items that are difficult to control how about cars? A terrorist who drove a 4WD along the footpath of Oxford St could potentially kill more people than the London bombings and would take almost no preparation.
The article inevitably concludes with claims about the efforts that al Qaeda operatives are supposedly making to recruit people for terrorist missions. Naturally it ignores the best recruiting method of al Qaeda – the huge civilian death toll in Iraq since the US led invasion. The best available medical research (by researchers from Johns Hopkins University and published in The Lancet – the most reputable and prestigious medical journal) estimates that there were 655,000 “excess deaths” as a result of the invasion in the period up to July 2006. Over the last year the best available reports suggest that the violence in Iraq has got worse (among other things the number of US air-strikes is twice what it was last year).
For more analysis of the fear-mongering being done by much of the media (including The Age) here’s another article from The Register.
It’s interesting to read The Age’s article Truth first casualty of the internet?. Maybe they should publish an article titled Intelligence first casualty of print media?.
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