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AJ Venter

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03 November 2005 by AJ

how expensive is Telkom…?

This was sent to me by a colleague. Worth a laugh.

___________________________

We all know that Telkom has ridiculously high telecoms charges –
that’s no secret.

But whenever a comparison is made to other countries, Telkom has a
tantrum like a spoilt child stating that it’s unfair to compare South
Africa to other countries.

I decided to do a little comparison to show how expensive it really
is… so here are the results of the investigation.

I compared the time and costs involved in downloading 100GB of data
over Telkom’s fastest ADSL offering (1Mbps) with the time and costs
involved in flying to Hong Kong, visiting an Internet café,
downloading 100GB of data at their fastest speed (1Gbps), and flying
back.

Yep… that’s quite a challenge! And here are the details:

Telkom

Line speed = 1Mbps

Download Size = 100GB

Estimated Download Time 9.5 days

ISP (34 x 3GB accounts @ R269) = R 9,146.00

Line Rental (ADSL) = R 680.00

Line Rental (Residential Voice) = R 92.28

TOTAL = R 9,918.28

Hong Kong

Line speed = 1Gbps

Download Size = 100GB

Estimated Download Time 13 minutes

Flight (SAA) = R 7,942.00

Internet Café (average cost @ HKD20) = R 17.43

TOTAL = R 7,959.43

Difference: Hong Kong is cheaper by R 1,958.85

So to sum up… it’s cheaper and quicker to fly to Hong Kong if you
want to download 100GB of data!

I haven’t got the time to work out where the two converge, but it just
shows how badly we’re being ripped off!

Posted in AJ Venter, technology ·

Archives

01 November 2005 by AJ

Should Nathaniel go Open ?

Well he asked me the question, so I reckoned I owe him an answer. The answer is as simple as yes or no, and being an advocate for software freedom, of course I believe everybody should use free software even if there is some initial inconvenience for them simply because the freedoms gained are more valuable than convenience.

That said, any software migration is a tricky business, no less so for a person on his own PC so it’s smart to go about it the right way.
Herewith then, my generic howto for preparing to venture into the world without windows (a side effect of it being the world without walls…), most of this has been written about before, but I’ll try to do the short concise version.

I would recommend grabbing one of the linux live cd versions (of course I suggest OpenLab) and trying it out first, find out what you like, and more importantly try out the applications related to what you do, see what’s missing, and also what you will gain. Then look at the “missing” list, ask your geek friends or local LUG about running them in wine or finding replacements.
Once you’ve done that, look at what remains on the “missing” list. Now rate them by how critical they are. Can you do your job without them ? Sometimes the answer will be no, unfortunately it takes time to replace every computing tasks (although in reality there is 10 000 times as many free software projects as proprietary ones – I kid you not) so some things we don’t have yet. If there is only a few, then you should look at a dual-boot for the interim, this may in fact be a good choice even on the mid-term to allow you to migrate at your own pace, but it’s only worth the effort if you do promise yourself to use your linux system as much as you can in order to eventually leave the old system behind (litterally, if you don’t then why bother).
Either way, you are now ready to install GNU/Linux on your machine, either by itself or as a dual-boot system. In either case, you will need to partition and format at least part of your hard drive so the most important thing at this stage is to do a full backup of all your data (you should do that about once a week anyway), if you are going for a dual-boot, install the other operating system first using about half the drive. GNU/Linux is good at seeing that you have another OS and sharing with it, some other OS’s are not so good at dealing with dual-boots, so this way round let’s you utilize the compatibility features of your new system.
If an OS install of any variety is daunting to you, this is the time to call a geek friend and ask for help, ideally, also let him spend a little time installing any critical fixes released by the distro and showing you how to do this yourself, and most importantly, how to install new software on your chosen distro so that you can add what you need (note to the heek in question, show kpackage or synaptic or gslapt or whatever the appropriate GUI tool is, leave the commandline for when your friend herself is ready to venture there).
And voila, you are ready to begin your journey into the free world. Like any exploration, it’s an adventure and that adventure will become it’s own reward.

Posted in AJ Venter, technology, uncategorical ·

Archives

27 October 2005 by AJ

Whammy Bar – Part 2

Now if notation cannot even handle one of the most popular present day western instruments, imagine how bad it gets with other cultures. Bach tried to emulate tribal music – he was even further off than he thought since their entire scale system was different, he could get a near fake but the notation he worked in was simply not able to represent the melodies of his inspiration.

This is where I get annoyed by a lot of my fellow protestants, the more orthodox among them still believe that psalms must be sung to the somber orderly music of the renaiscance church. Firstly I’ll argue the “orderly”, rock has no less order in it’s structure than the others, in fact all music is equally ordered – that’s one of the basic things that make it music.
More importantly, to claim that this is higher art is ridiculous, not that some of it isn’t pretty, but it was written in a clasistic system that measured the quality of art by how difficult it was to reproduce and more importantly by the ammount of specialist training you needed to understand it. The problem with this “classical” church music is that it goes against the very grain of what protestantism is supposed to be about – it makes church songs unsingable to most people. Worst it was almost certainly not the
music those songs were written for !
We have no idea what those melodies sounded like of course, since David and his contemporaries didn’t have ANY notation.
We do know that no two cultures’ music sounds the same so we can almost certainly guarantee it didn’t sound like renaiscance western music.

So let’s try a thought experiment. We could try to guess how David’s songs might have sounded, by comparing it to modern day music with a similar lyrical structure. Ignore all gospel, there is no resemblence at all between modern gospel and the psalms. Structurally the psalms, particularly those of David find their closest contemporary paralels in rock balads. Rock balads themselves have a lot of
inspiration from minstrel balads of the middle ages, which it turns out were played on the later descendants of the same instruments that David used (particularly the lyre).
So if authenticity of worship (supposedly the prime protestant goal) was truly sought -we should be singing psalms to the acompiment of melodies more similar to “Low man’s lyric” or “Cold November Rain” than to the stuff we normally get !

Not that my point is to talk much about Church, or even to single out protestants that much, it’s just that I know them because it’s the church-culture I was raised in.

So what am I talking about ? Music as a universal. We’ve established that music sounds different for each culture, yet all people can recognize it as music. Why is this ?
Scientists have no fixed answers, but they believe that music is not handled by the speech centers of the brain (which is why lyrics are so often heard wrong, thousands of people love a song “This guys’s in love with you” which ACTUALLY goes “The sky’s in love with you”), it’s handled by something much deeper, the same rhythm centers that control other rhythmic things in our bodies – like heartbeat.
Music reaches right down into the soul, into the absolute lowest levels of our brains and triggers emotions from their most ancient “on” buttons. Music remains a human universal, because of this – because in a very real way even the most contemporary music will always be primitive, if it wasn’t, it wouldn’t BE music.

Posted in AJ Venter, art, music, uncategorical ·

Archives

27 October 2005 by AJ

Whammy Bar

Music is quite possibly the most culturally universal thing on the planet. Every known culture has music. A lot of people have this idea that western music is “modern” and other cultures’ music is “primitive”, this is of course horse-figs. Music made in China or Tobega today is as contemporary as music made in the West today – they are both made today.

So Bach got it wrong when he used tribal music as the intro to “The rites of spring” to give it a “primitive feel”, the reality is that music he took inspiration from was just as contemporary as the music he was creating (for that time), this doesn’t change that he created one of the better symphonies, it does mean that what he intended to achieve with it was impossible in that way.

Music is a universal, but there is no universal music. Every culture has a different musical scale. Music notation as we know it, can in fact only be used to write down western music, and even then only those newer than the 1500’s or so.
This is because for starters, western music before that used completely different scales (which ones we don’t know for sure, but some of them like Gregorian chants still survive). And worse, it cannot even truly represent all western music since then.
A good example is guitars, notation can and does efficiently encode most known classical guitar pieces (with only a few exceptions like some Spanish balads that incorporate moments of using the guitar box as a percussion instrument – slapping it – in between the notes). Classic guitars however have only two ways they can be played, strumming or chords, both of which notation knows about.
Electric guitars on the other hand add several other techniques. For starters there’s “choking” (what Hendrix invented), where the guitar is played like usual, but the notes are pressed right up against the guitar-base – this doesn’t work on classical guitars because the notes would be too soft, but electric guitars have amps. Notation has now way of indicating -play this A right up against the head, yet it gives your songs a very different emotional feel.
And that’s not the worst of it.
Now try sliding, sliding is a technique where electric guitarists press the strings flat using a hollow object of some sort, a short metal pipe can work but beer-bottles are often employed. Sliding causes the slide-object to vibrate a note in harmony with the chords played – effectively you’re playing two instruments at once in harmony now – try writing notation for THAT one.
And that’s not even the most important electric guitar technique of all – what electric guitarists are most famous for is the “rapid strum” where the same note is played over and over so fast that it sounds like it lasts for a very long time, usually introducing a “howl” sound into the note.
Metal-players particularly love the howl as an emotive expression. But notation has no idea what to make of that, since no other instrument can be played that way, a a violin with a six meter bow would maybe come close.
So guitarists, especially rock-guitarists tend to prefer writing their songs down as riffs.

Posted in AJ Venter, art, music, uncategorical ·

Archives

24 October 2005 by AJ

Holy papercup manufacturers of doom batman

Circa 1998/1999 RedHat Inc. became the first truly successfull Linux distribution. Prior to that only two companies had really made a commercial success of free software, cygnus at first (though they got greedy later and went non-free and that made them bankrupt so redhat bought them), and VA-Linux systems, which later renamed itself to VA-software as the systems industry shuddered it’s final dying spasms.

This week however, saw the founder of RedHat, Bob Young resign from the board of directors.

What makes Young of particular interest is his later venture, the one he will now be involved with full-time. Young founded lulu.com the online alternative publishing house (my own book “Batteries not included” is published by lulu), which opened up the doorway for many writers who simply would not sell out far enough for the mainstream publishing world to accept them, to nevertheless get their work out there and read.

Young has now left the software world behind permanently to focus on this contribution to the world of the arts, and more power to him I say.

Posted in AJ Venter, art and tech, technology, uncategorical ·

Archives

21 October 2005 by AJ

I feel cheated.

While Nathaniel is working on the new servers, I felt I would try to post something entertaining, which nevertheless wasn’t a crisis if it got lost. A re-blog was the obvious choice. So herewith, a little something I wrote a couple of weeks ago.

—-
“Apollo 11 was ten years ahead of schedule – that means as an author, I have to adjust all my timelines, we’re on the moon and it’s 1969 – that means that what I predicted for 2001 is now suddenly more likely to exist in 1981” – Arthur C. Clarke, author of 2001 – A space oddesey, October 3rd 1969.

I feel cheated.

It’s now 2006. Not only are we not anywhere near the tech that we Clarke anticipated for 1981, we didn’t even get there in 2001. Where’s my jetcar ? I want my lasergun damnit ! Oh and those x-ray glasses… mmm…
But I digress. What went wrong ? A hundred and fifty years ago the first scifi author (unless you count Dante) Jules Verne wrote a manuscript called “Paris 1939”. He predicts a city where people drive cars (this appears to be the first usage of the phrase ‘horseless carriage’) and filled with electric lights everywhere – including streetlamps. Since the lightbulb wasn’t even invented yet. His publisher refused to print the book calling it “just too farfetched”. His daughter inherrited the manuscript who passed it on to her daughter, who published it to “rectify the acuracy of grand-dads storytelling vission”
Former South African Minister of the external, Pik Botha was a writer before entering politics. In 1951 he writes a story called (translation): The value of a heart. In this story, he has Joseph Stalin undergo a heart transplant. Once more the story remained unpublished for being “too unlikely”. So Mr. Botha left scifi and spent the rest of his short writing career doing romances and (rather silly) detective stories.
Less than 10 years later, the first heart transplant happened right here in South Africa.

So SCIFI authors have predicted some things remarkably well. Yet amazingly, the best of the best just doesn’t seem to match. Most profound innovation of the end of the twentieth century – the personal computer. Nobody, not one saw that one coming. They all worried about the giant computers in the corps getting too powerfull – nobody saw the ones in our homes.
Once they were there, the next great predictions were wearable computing (watches that think), and voice recognition. So far those two have materialized, but been rather a let-down (though wearable computing is growing).
So the greatest inventions, they didn’t even expect (somehow none of the scifi writers, renegades that they are, and inspiration to renegades – ever really believed in the renegades who read them, for it was those renegades (particularly Steve Wozniak) who brought us the one thing no company on earth would have thought could be sold), and we got none of their greatest promisses.

There is no reliable cryogenics system for multicelled creatures. There is no cure for cancer yet. The flying car is still just something you see in movies. Personal space travel is just a dream, and even the X-prize won’t change that very soon. The world where space ships are as simple a piece of ownership as a car today is still as far away as ever.

What’s worse, we are still stuck on some things which scientists and scifi authors called “outdated” fourty years ago. Most notably the internal combustion engin – and fossil fuels. Things which we already have better alternatives for. The cheapest being methane conversion for any car. Methane is free – governments are only too greatfull to get rid of what to them is just a waste product, you can today, for a small outlay convert any car to run on a free fuel that causes absolutely no polution. Yet there are less than 100 of them in the world.
The reason is simple: politics. Political pressure by large oil companies (and countries) keep us dead set on a course of self-destruction when we have multiple ways out – the methane conversion is just the most easilly and immediately viable.
Of course they tell you there are safety issues – as if those didn’t exist in gasoline cars earlier – fix them ! It’s easier than an electric car that still needs to have a polluting power plant somewhere.

I feel cheated. What the hell happened to the world ? The IT industry has been through dosens, that’s dosens of major revolutions in the past fourty years. Vaccuum tubes became transistors became microchips became microcomputers became home computers. Punch card binary became assembler became top down programming became modular programming became object orientation.
And even now we are on the verge of the next major breakthrough – practical nanotech, and quite likely not too long after that, quantum computing.
So why the hell are cars still essentially the same as they were in 1893 ? Why on earth are powerplants still basically what they were in 1925 ?
Innovation has not stopped, if anything the pace has picked up – but where we needed it most, it hasn’t happened. I don’t buy it. Something else is stopping the innovations from realizing into products. Something with power and money and a vested interest in the status quo – which leaves not too many usual suspects !!
I feel cheated.
The world has been cheated.
We’ve been cheated out of our very future.
Any chance you think that we can still wake up in time to take it back ?

Posted in AJ Venter, art and tech, re-blog tidbits, uncategorical ·
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nathaniel stern is an awkward artist, writer, and teacher, who likes awkward art, writing, and students.

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