Wednesday, July 9, 2008

Technowhelm

Kia ora tātou – Hello Everyone
The only thing worse than being blind is having sight but no vision - Helen Keller

I’m usually forthright when I write a post. Today I’m going to be extremely forthright.

In this technological century there is an over-abundance of information, the so-called infowhelm that I read about every other day. Recent examples of laments about it can be found here, and here, and I have every sympathy with the lamenters John and Michele.

I first learnt the term at a conference in Wellington in, em . . . it’s been so long now I’ve forgotten when. Sometimes it’s written as info-whelm, sometimes as infoWhelm. They all mean the same thing: too much data
for anybody to cope with. You start off sifting and sieving and all you’ve got at the end of it is a headache.

In January 2006, Ian Jukes on Change said,

“I am optimistic that collaborative practices like blogs and wikis can help us filter InfoWhelm into a manageable understanding of the world we chose to live in.”

I was hopeful when I first read that. Just on 30 months later, I’m sad to announce that Ian’s optimism is eclipsed by a new phenomenon that’s set to cause more problems than Infowhelm.

Gina Minks' post "What Competencies do Knowledge Workers Need?” lists just 5 tools that she feels need mentioning:

Wikis

RSS Feeds

Blogs

Information Creation tools such as Youtube, SlideShare, Flickr

Tagging

She aptly suggests as one of her goals “a lunch and learn on at least one of these topics - to help get my co-workers up to speed. Maybe I’ll call it: What is a wiki and why the heck do I care?” I couldn’t help but sense a wee bit of tension in Gina’s post, and I’m not surprised.

Add to those listed the podcast, tumblelog, Twitter with its tweets, pipes etc, del.icio.us, Ning, video-share, slide-share. The lists I post don’t do justice to the plethora of Web 2.0 technologies that abound.

But as I write this there will be another one or two born on the Net, so what does it matter? They all contribute to what I call technowhelm.

It has one benefit, however. Soon we will be so bound up in deciding which Web 2.0 technology to use, learning how to use it and wondering if it’s the right one to choose
by the time we’ve sorted all that out, there won’t be any time left to experience infowhelm.

Ka kite anō – Catch ya later

Monday, July 7, 2008

What’s learning about?

Tēnā koutou katoa - Greetings to you allstudent
I often wonder what learning’s about. It seems strange that I’ve spent tens of years observing it happening in my students, or not as the case may be, and I should still think this way. But it’s true. . .

I often wonder what learning’s about

From the moment of birth a child starts to learn. Children are like vacuum cleaners. They are capable of picking up anything and everything that they can learn and make sense of and a whole lot more besides. It is impossible to stop a youngster from learning without an act that would be either physically or mentally injurious to the child.

Some say the human ability to learn developed through evolution as a survival trait and that it has been passed down through the generations. Much to the exasperation of their teachers, this amazing ability seems to be lost, at least in part, for some children when they go to school. So what is it that progresses this ability to learn in some children but seemingly not in others?

student

Arthur Lydiard was born in Auckland, New Zealand in 1917. Late in 1978 I read his book ‘Run – the Lydiard Way’. His world-famous schedules helped me get my average marathon time close to 3 hours. The first few chapters of his book describe how his curiosity brought him to experiment on his own body, pummeling it with the most formidable vigorous athletic activities: running, sprinting, climbing and ultra-marathon running.

By experimenting on himself he learned how the body responds to physical activity, both beneficially and injuriously. Lydiard took the principles he developed to many countries where world-class athletes, coached by him, won Olympic medals by the handfuls. Lydiard had a drive to promote athletics. But the most significant thing he did for himself was to learn how his body reacted to physical activity. He learnt how to use physical activity to improve physical ability.

I often wonder what learning’s about

I was a hopeless case as a secondary school student. A snotty, skinny year 8, my only interest was Science, a subject that I’d an obsessive passion for. I progressed to year 9, dropping Latin, for my teachers were in despair that I could ever learn a single word of that language. Development in year 10 was not much different. The deputy principal warned me sternly that if no improvement happened in other subjects, especially English and Mathematics, I would not study Science the following year. That threat changed my life as a learner. The thought of not doing Science made me think of what I had to do.

student
With an average achievement in any assessment in Mathematics or English of no more than 25%, I decided to approach my teachers and ask for help. I got a falling-apart book from my Mathematics teacher. Though its pages fell at my feet on opening, it covered all the work for that year and had examples throughout with answers at the back. It was my first experience of what formative assessment could do for a learner. My English teacher got me into the school’s junior debating society. From then on I never looked back.

That year in Mathematics I achieved an end of year examination result that should have won a prize. But I was accused of cheating, though no real proof could be obtained as to how I did that. I also won a debating competition during that year when standing as the Scottish National candidate in a mock election. Even in Scotland at that time, Scottish Nationalists were thought of as walking jokes. Perhaps I assisted in some small way towards the eventual victory in 1999 when Scotland established its own Parliament. Who knows?

student
I can firmly attest that if it weren’t for my obsession with Science and the threat of having to leave that interest behind, I’d never have studied English or Mathematics the way I did - at least not at school. But it didn’t stop there. So much more had to be learnt about learning when I eventually earned a place at university.

I attended all the lectures, took notes, but my handwriting was abominable. Any attempt I made to study my scribblings came to nothing if I left it too long. I panicked at this, for I wondered how on earth I was ever going to learn from my hopeless note-taking.

I often wonder what learning’s about

I thought up a plan. By accident I’d found that I could remember enough of a lecture to make sense of even the most undecipherable writing in my notes, provided it was read the day I wrote it. What I’d to do was obvious. I’d to learn to write tidily. But there was no way I could write tidy notes quickly enough during a lecture. So every evening after lectures I transcribed my messy scribble into copper-plate handwriting, a style of my own design. I then had a tidy set of lecture notes that I could read and understand even weeks after I’d attended the lecture.

As well, I found that, through the process of transcribing, I learnt from the proximal thinking that I'd done. Writing comments from readings of relevant texts helped me further. This particular aspect of study practice was brought to mind most recently when reading Vivian Yonkers’ and Tony Karrer’s thoughts on “writing forces learning”.


student
Further ploys I developed were drawing on my interest in music - I’d played violin as a child. I found that this instrument was not the most relaxing one to play as a break from study. The guitar was better. Short 20 minute to half an hour intervals of studying with 5 to 10 minute musical sessions in between meant that a 2 to 3 hour study session was made easier and often seemed to speed past. So by having frequent breaks in my study, I was able to learn from published guitar tutors how to play folk-style and classical guitar - a bonus!

All the study methods I’ve summarised here, and more, I used through my undergraduate years. Erudite educators use the term metacognition to describe these tactical approaches, strategies learnt that help us learn, some of which we may hit upon by accident.

How do we entice our students to use their ability to learn how to help themselves to learn?

student
Ka kite anō - Catch ya later

How To Treat The Youth Of Today

Tēnā koutou katoa – Greetings to you all

It is my daughter Hannah’s 18
th birthday today. We took her to lunch at The Hummingbird, Courtenay Place, Wellington, an award winning restaurant/cafe. The Hummingbird certainly has ambiance and it doesn’t need a jazz band for that. Being Monday, the first day of the school hols, there was no band. But the warm atmosphere, good menu and service certainly made a special day, one to remember.

My wife, Linda, suggested we bought a bottle of bubbly to celebrate. Catriona (14) had a ginger beer, which was her choice and Hannah got her first legal sips from a fine bottle of Morton Estate. She took two hours to sip her glass with the meal. There was no fuss. And she didn’t treat it as something-specially-over-the-top for she’d tasted sips at home from her mother’s wine glass from time to time over the years and sips from my cider glass (I don’t drink beer – gives me headaches).

Neither did Catriona feel that she was left out of it, though she didn’t get her usual sip, being in a restaurant would have made that illegal anyway and the proprietors would have been within their rights to throw us out on the street.

Maturity

I couldn’t help but admire the mature attitude of our newly 18-year-old, while at the same time feeling some concern for the younger generation of New Zealand over matters of consumption of alcohol and moderation.

New Zealand has a youth-alcohol problem. It’s not helped by the rugby-beer-swilling culture that's so prevalent in that country, and it's exacerbated by a recent return to 18 from 20 as the legal drinking age.

Parental responsibility

As a parent and a teacher, should I feel guilty about introducing my daughter to the demon drink? Shouldn’t my wife and I have known better than to publicly allow Hannah to booze unashamedly in a restaurant? Shouldn’t I be extolling the virtues of abstinence in the face of a growing youth-alcohol problem in New Zealand?

Ka kite anō – Catch ya later

Saturday, July 5, 2008

In Defense of Occam’s (Ockham’s) Razor

Tēnā koutou katoa - Welcome to you all
There’s been a lot said about Occam’s Razor on the Net recently, though not always supportive of its application. Also known as the law of economy, or the law of parsimony, it derived its name from a principle held by the medieval scholar William of Ockham.

He is believed to have said non sunt multiplicanda entia praeter necessitatem - entities are not to be multiplied beyond necessity. It is thought that this principle may have been broached before Ockham by a French Dominican theologian Durand de Saint-Pourcain (1270 - 1334).

A well used blade

It has been used in many disciplines. Science in particular has enjoyed its application over the centuries and it has been exploited a fair bit in philosophy – Nicole d’Oresme, Galileo, Newton and Einstein all drew on Occam’s Razor in some form in their studies. Einstein used it in his theory of special relativity that predicted that the lengths of objects shorten and watches slow down when they move. In considering the tangible, explicit aspects of a theory, Stephen Hawking, in A Brief History of Time, claims “it seems better to employ the principle known as Occam's razor and cut out all the features of the theory that cannot be observed.”

Stroppy criticism

Lately the principle seems to have come under the knife, and it’s validity as a tool has recently been given the chop by several writers.

Is it condemned to the scrap-heap of pre-21st century gadgets?

Or is there life in the old blade yet?

These questions came to mind when I read Peter Turney’s post, Ockham’s Razor is Dull. He speaks disparagingly of its use in the theoretical context of machine-learning and cites Geoffrey Webb’s “Further Experimental Evidence against the Utility of Occam's Razor”. Webb criticises Occam’s Razor for it is found that it doesn’t always work when commonly applied to modern machine-learning.

While I’ve no doubt that Turney’s opinion has some merit, I feel that the original intention behind the principle of Occam’s Razor has been forgotten, or at least severely misunderstood in its application to machine-learning. I suspect the initial application of the principle in such a context was ill-advised, that it was assumed as a means to an end rather than a way of viewing things.

A useful cutter

Occam’s Razor is often applied in many acute and incisive ways. Approximations when quoting populations, expressed to the nearest thousand heads, have been shaved by it. The so-called rounding up of numbers involves its use in trimming away minor fractional odds and ends. But its willy-nilly application can cause sharp problems for the unwary, as any keen statistician or accountant can attest.

It is most fittingly used as a way of looking at abstractions. For some practical purposes it can be brought into play when a decision is to be made on what to select as best from an array of ideas, or processes and strategies that give rise to almost identical outcomes.

Phil Gibb’s useful statement of the principle for scientists is "when you have two competing theories which make exactly the same predictions, the one that is simpler is the better." In that regard it has application in efficient decision making.

It’s all to do with what is perceived to be significant. I suspect that the ability to discern keenly is a vital component of the capacity to use the device effectively. This talent, present almost subconsciously in some people, may be what puts human sensitivity to differentiate well, above that of a machine.

Gibbs’ delightfully brief “What is Occam’s Razor?” lists an array of statements that seem to have been derived from the principle:

If you have two theories which both explain the observed facts then you should use the simplest until more evidence comes along.

The simplest explanation for some phenomenon is more likely to be accurate than more complicated explanations.

If you have two equally likely solutions to a problem, pick the simplest.

The explanation requiring the fewest assumptions is most likely to be correct.

Keep it simple, otherwise known as the KIS approach.

A worthwhile tool

It is an excellent tool to apply when looking for a model or a metaphor to use in a learning context. Map makers use its principle when simplifying the features of a landscape in two dimensions. The famous colourful London Underground Tube maps, aside being now considered works of art, are splendid examples of the practical use of Occam’s Razor as a design tool.

Current concerns expressed by many bloggers about the glut of data, otherwise known as infowhelm, could well be emeliorated by the judicious and skillful wielding of the blade. A honing of the discerning abilities may help to carve away redundant or duplicated information. Methods for trimming and blood-letting the burgeoning plethora of knowledge on the Internet are ripe for reaping.

Simplification is its keenest feature. A slice or so could well put Occam’s Razor at the cutting-edge of 21st century knowledge management.

Ka kite anō - Catch ya later

Thursday, July 3, 2008

Haere Mai!

Haere Mai!
The traditional Māori welcome to a marae is called a pōwhiri. Sometimes the wero is made before a pōwhiri. This video shows the wero, an ancient Māori challenge used to determine whether manuhiri (visitor) comes in war or in peace. The taki is the dart which is laid in front of the manuhiri who must lift it carefully. If the taki is lifted by its handle, this indicates that the manuhiri does not come in peace.



The people of Taranaki do not wish to incite war. They lay a Raukura (white feather) instead of a taki. The Raukura is a
symbol of peace.

The wero is, of course, a symbolic ceremony where both the
manuhiri and the people of a marae can demonstrate their peaceful intensions at a Māori welcoming.

I take this opportunity to welcome you as a commenter to come in peace onto my blog. I offer you the invitation to comment and in so doing, lift the Raukura.