The Start of My Computer Career

August 23, 2007 | etbe

When I was about 11 years old I decided that I wanted a career related to computers. My first computer was the TEC-1 single-board Z80 based kit computer from Talking Electronics magazine (see the photo below). I think that I built this when I was 10.

The computer is 16cm high and 25cm wide. The six seven segment displays are the only built-in output device (there were optional kits for other output devices). The keypad has the hexadecimal number keys, an “ad” button for entering addresses, a “go” button for executing programs, and “+” and “–” keys for incrementing and decrementing the address. Below the reset button (labelled “R“) you will see the optional function key (of which I can’t remember the purpose). Programming this computer required entering the hexadecimal code on the keypad with the “+” and “–” keys being the main method of editing (the “ad” key was used to jump to a different section of RAM). In editing mode the first four seven-segment displays showed the address (the Z80 could only address 64K of RAM) and the other two showed the memory contents (the word size was one byte). In terms of user-friendlyness it was probably about equal to punched cards – apart from the lack of non-volatile storage (unless you built the optional NVRAM kit).

My TEC-1 has 2K of RAM (the 83251R chip is equivalent to an Intel 16kilo-bit 6116 static RAM chip) and 2K of ROM (the chip with the orange sticker labeled Mon1 is a 2716 EPROM – 16kilo-bit).

Not long after that my parents bought the first serious computer for the family, a Microbee Z80 based system with a tape drive that used a monochrome monitor of resolution approximately equal to CGA and which had either 16K or 32K of RAM (I can’t recall). The next family computer was a Microbee Premium series 128K which is probably the same model as the one depicted on the Microbee Wikipedia page (a serious omission of the Wikipedia page is that it has no picture of the box containing the PSU and the floppy drives for the Premium Series). My first published article in a computer magazine was when I was about 15 years old and I wrote a long email on a Fidonet echo (mailing list) reviewing a 3rd party update to the CP/M system for the Premium Series Microbee and was surprised by having it published in the Microbee club magazine (in those days we didn’t bother much about copyright so no-one asked for my permission before publishing).

I wonder if starting with computers at such an age is typical for people who now contribute to free software development. I think it would be interesting to see some blog posts from other people in the community about how old they were when they started with computers and what type of computer they started with.

I also wonder about the correlation between the age of starting with computers and career success in the computer industry. One significant benefit of starting early was that I could learn things that would be useful for my career in later decades while other children were wasting time studying what teachers told them to study. It also meant that in later years of high-school I could relax knowing that I could get straight B’s without effort which was more than was required to enter a CS degree program at that time. Until half-way through year 12 I tried to avoid ever doing home-work at home – home-time was computer time! Do you think that the age at which you chose your career significantly affected your success? If so in what way?

If you were asked for advice by parents as to when their child should be given it’s first computer what age would you suggest? Unfortunately I usually get asked for advice about such things by people who have children aged 16+ (which is way too late IMHO).

Update: Dbenn recently gave a talk to his son’s primary school about computers and he used the TEC-1 as an example. They are still in use!

Is Hand-writing Necessary?

August 11, 2007 | etbe

The Washington Post has an article about handwriting, apparently for some university entrance exams in the US 85% of students write their essays in block letters. The article claims that students who have poor writing skills demonstrate lesser ability to construct sentences – and claims that this indicates that there is a link between hand-writing and mental processes.

While the article didn’t cover the evidence in much detail I was left wondering whether there were any tests of teaching students to touch type and then assessing them on the same tests. I suspect that increasing the ability to record text in any way would increase the sentence length and the use of long words. While students who can only write slowly will have an incentive to write more briefly.

My handwriting is quite poor, I was never able to write quickly or particularly legibly and since completing university I have had little incentive to improve my writing skills. When laptops became cheap enough for me to own one (in 1998) my hand-writing skills decreased and when I started seriously using a PDA about a year ago they decreased again.

I don’t believe that my writing skills (in terms of conveying ideas and instruction to other people) have declined during this time. In fact the steadily increasing amount of writing that I have done has improved my skills a lot.

I think that children should be taught cursive writing, but it shouldn’t be regarded as especially important – or more important than touch typing! Then there’s the issue of the Dvorak keyboard. If the government wanted to improve the efficiency of the nation (which is what they claim to be doing) then maybe teaching all students touch-typing on a Dvorak keyboard and subsidising the purchase of such keyboards for everyone would be better than some of the current ideas in education. Dvorak keyboards would certainly be better than flag-poles!

News reports indicate that hand-writing skills are decreasing dramatically in Japan due to word-processors – and a significant number of students are never learning how to write any significant portion of the Japanese letters. But the sky doesn’t seem to be falling on them either.

Mark Greenaway writes about having bad hand-writing and is apparently considering some sort of remedial course. I have to wonder how good Mark’s touch-typing skills are and whether he would benefit more from improvement in that area.

Praising Children vs Praising Programmers

July 31, 2007 | etbe

In a comment on my blog post titled Childhood, Don Marti refers to an earlier blog post he wrote which refers to a New York Magazine article about the effects of praising children. The article does in some depth to describe scientific research into the issue of praising children for being “smart” vs praising them for working hard – with the conclusion being that it’s significantly better to praise them for working hard!

One quote from that article that I find very significant is “Baumeister has come to believe the continued appeal of self-esteem is largely tied to parentsâ€™ pride in their childrenâ€™s achievements: Itâ€™s so strong that ‘when they praise their kids, itâ€™s not that far from praising themselves’“. This matches my theory about people who subject their children to TV documentaries about gifted children.

The conclusions regarding children seem quite clear and the article provides direct advice to parents and teachers as to how to avoid the problems.

One issue I am wondering about after reading the NYM article is whether being exposed to smarter children hurts a child’s learning ability. The fact that there is no correlation between high self-esteem and learning ability has been proven, but the reports do not indicate whether there might be a correlation between a decreases in self-esteem and a decrease in learning ability. I recall pointing out to one the few good teachers at high-school that having some of the most capable and some of the least capable students in the same class was inefficient and led to excessive boredom for the more capable students and excessive difficulty in keeping up for the less capable students. I was told that “streaming” was considered bad because it was bad for the less capable students to know their status. I was also refused access to my results of the Westpac Maths contest for the same reason – which seems particularly strange, I was in the training program for the International Mathematical Olympiad so I doubt that releasing my score from one maths contest would change anyone’s opinion of my ability.

I am also wondering about how this effects adults (apart from their education history). Should we try to praise work colleagues for their effort instead of being smart? Are adults discouraged from trying hard at their work when they see others succeeding with little apparent effort?

One data point for this seems to be kernel coders in the Linux community. Everyone sees super-star Linux kernel coders on stage (on a pedestal) at conferences and it’s easy to believe that such people are significantly more intelligent than others (the well-known programmers are indeed very smart – but they also work a lot harder than most people believe) and that being so smart is a necessary pre-condition for submitting Linux kernel patches. I have met many people who appear to have the ability to be good at any type of coding but seem intimidated by kernel coding it for these reasons. Statements such as “I’ve been doing Linux coding for 10 years but I’m not a kernel coder” are often heard at Linux conferences. Also people who’s skills are respected are often regarded as kernel coders without any real reason.

The Linux kernel is a large C program with limited options for a debugger, if you are good at C coding you should do OK! I know that I am trivialising the issues related to kernel coding, there are some tasks such as reverse-engineering device-drivers and debugging some of the tricky race conditions that require special skills – but no-one is born with such skills! I would not suggest that someone try a significant kernel coding task on their first attempt – as with all areas of programming it’s best to start with the easy things first. The web site kernelnewbies.org is a good source of information for people who are getting into kernel coding.

I wonder whether a change in the attitudes towards such things could encourage more people to write free software, and more of the current programmers to attempt new challenges (such as kernel coding).

Childhood

July 27, 2007 | etbe

Recently there has been some discussion and controversy about a 15yo boy being allowed to perform a Caesarian operation on a woman (without her consent). Don Marti seems to think it’s OK and gives some examples of what 15 year old people used to do in past times. However he misses a couple of significant points, one is that the knowledge of surgery was much lower a few hundred years ago and the expectations of the patient were a lot lower, the other is that the patient in this case did not consent to being operated on by a 15yo. If the boy’s mother thought that he was capable of doing the job correctly then she could have allowed him to deliver a younger sibling…

Given a choice I would rather have someone like Doogie Howser operate on me than a random surgeon – but I would be extremely unhappy to discover after an operation that it had been performed by a different surgeon than planned who didn’t have a medical license and who’s motivation was to invade my privacy by making a movie of the event!

Don cites the interesting essay Against School by John Taylor Gatto which makes some really good points about the state of the education system in most first-world countries. An interesting point that John Gatto doesn’t mention is that in Japan school-boys wear uniforms that are based on Prussian military uniforms. From all the evidence that I have seen the Japanese school system is more Prussian (IE worse by many objective measures) than most countries.

The Sydney Morning Herald has an interesting article comparing education systems which claims that a major cause in lack of academic performance is unjustified praise. I first became aware of the extent of this problem when discussing education with a misguided university lecturer. He told me that he felt that his purpose was to make the students believe that they had achieved something and that this was much more important than actually teaching them. My response was to point out that heroin and cocaine are both good options for people who would rather feel successful than succeed and to enquire as to whether he thought that they should be advocated for children. The conversation ended soon after that and he requested that I not name him or his university when blogging about it. I take this as an admission of guilt, if you act decently in public then you should not be afraid of appearing on a blog – decent actions will either be too boring for a blog entry or things that you are proud of.

Documentaries about Gifted Children

July 16, 2007 | etbe

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.

Lord of the Flies

May 17, 2007 | etbe

Apparently they are planning a reality TV show that might be named “Kids Nation” where 40 children are allowed to develop their own society for 40 days. The claims are that there is “no parental supervision”, but of course with many TV cameras watching I’m sure that even the most stupid children can work out that there are reasons to behave relatively well. Also I’m sure that they will remove children from the show if it becomes necessary to avoid injury.

It will be interesting to see how well this develops. Maybe it could evolve into a new form of schooling, just leave children alone in a school with lots of security cameras watching them and let them study or not as they wish. It would be cheaper than running a regular high-school, and as there is little scope for providing a worse education than many (most?) high-schools currently provide it should be worth a try.

For a long time I have thought that the premise behind The Lord of the Flies was bogus. I believe that a major contributing factor towards much of the violence that is present in schools is the pointlessness of the entire system. There are very few students who are so stupid that they can’t realise that the education system is failing them. Whenever you put a large number of people in a confined space with nothing useful to do the results will be bad. If a group of students from a violent school were placed on an island without any supplies then I’m sure that they would soon realise that they need to cooperate to stay alive.

Update:
It seems that the Sudbury Valley school implements some ideas similar to mine. They also have a page of links to some other schools that do similar things.

school rating

May 4, 2007 | etbe

The web site http://au.ratemyteachers.com/ allows Australian students to rate their teachers. Ratings are anonymous and give teachers a score out of 5 as well as allowing students to comment on teachers.

The Sydney Morning Herald has an article about the site that describes the actions that the NSW Department of Education and the NSW Teachers Federation are taking to block the site.

The solution to this however is really quite simple. There needs to be a formal method for students to rate their teachers which will be used when it comes time to give pay rises to good teachers and dismiss or transfer to non-teaching duties the teachers who can’t do their job.

I encourage students to submit essays and debate topics about the anonymous news-papers published in the Soviet Union and other repressive states, why they were necessary (because criticism of the government was prohibited) and why they were morally right (a system with no method of correction will inevitably do bad things). Then teachers will have a choice of supporting the actions of the Soviet Union or the use of ratemyteacher.com, it will be interesting to see which option they choose. I think that it’s most likely that they will take the hypocritical path and support anonymous newspapers in the Soviet Union while attacking such free speech in supposedly free countries.

It’s interesting that an article on the failures of Mentone Grammar has just been published. Maybe if Mentone had been listed on the ratemyteachers.com site the Taylor’s would not have made the mistake of sending their son there. Or maybe if the Mentone senior staff had been reading that site they would have been able to correct the problems before they became cause for a legal dispute.

death threats against Kathy Sierra

March 28, 2007 | etbe

The prominent blogger and author Kathy Sierra has recently cancelled a tutorial at a conference after receiving death threats.

Obviously this is a matter for the police to investigate – and the matter has been reported to them.

It’s also an issue that is causing a lot of discussion on the net. The strange thing is that a large portion of the discussion seems based on the idea that what happened to Kathy is somehow unusual. The sexual aspect of the attacks on Kathy is bizarre but campaigns of death threats are far from unusual in our society. The first post I saw to nail this is the I had death threats in high school blog entry. Death threats and campaigns of intimidation are standard practice in most high schools. After children are taught that such things are OK for six years straight it’s hardly a surprise that some of them act in the same manner outside school!

But I don’t expect anything to change. Columbine apparently didn’t convince anyone who matters that there is a serious problem in high-schools, I don’t expect anything else to.

I can clearly remember when I first heard about the Columbine massacre, a colleague told me about it and explained that he barracked for the killers due to his own experiences at high-school. While my former colleague probably had not given his statements much consideration, any level of support for serial-killers is something to be concerned about.

This is not to trivialise Kathy’s experience. But I think that discussion should be directed at more fundamental problems in society instead of one of the symptoms. If the causes are not addressed then such things will keep happening.

etbe – Russell Coker

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