Archive for August, 2009

Keeping Identities Separate

August 30th, 2009

For a while, I was importing this blog into my facebook account, but I later chose to stop because I was uncomfortable doing so. Was it fear of how others will judge me for my thoughts? Maybe. At least that’s what originally justified the decision. But looking back, my discomfort with the writing here being posted on Facebook is that it doesn’t fit in.

Facebook is purely social. People behave and interact differently on Facebook. Conversations are casual and playful. When people log on to Facebook, they expect to see what they’re friends are doing in life, where they spent their weekend and what they currently like. Information that would be boring to everyone else but friends. This blog contains none of that, nor is it usually playful. It interferes with expectations.

When expectations are challenged, people become surprised. Surprise leads to curiosity because there it’s inconsistency between an expectation and an observation. Whenever someone is surprised about some subject, their view of that subject (in this case, you who surprised them) is called to be rewritten. If you happen to like the how things are, then it’s discomforting to think that it will change.

Imagine A World Where Education Is Free

August 27th, 2009

Students have a textbook problem. They’re too expensive. Flat world knowledge has an idea. They make textbooks free to read online. For a fraction of the cost of a normal textbook, you can purchase the books in soft cover, audio or even print it yourself. Most of the textbooks are currently business text books, many of which are yet to be released, but there are already over 400 classes prescribing these texts as reading material.

All books are released under a creative commons license which allows anyone to modify and redistribute the text as long as it’s published under the same license and the original authors are acknowledged. Following the trend in software development, this makes the textbooks ‘open source’. Related is an article by Scientific America about the successfulness of open source text books so far.

The open-source dream got a new boost in May, when Governor Arnold Schwartzenegger, responding to his state’s budget crisis, asked content developers to submit their “open-source digital textbooks” to California Learning Resource Network (CLRN).

[...]

While the real power of open-source textbooks, Bridges and others say, is being able to tap into the knowledge of the nation’s 3 million schoolteachers, a look at the recent crop of books suggests that’s not an accurate reflection of how educational content is being created. So far, the front-runners were typically written by just one or several authors, and the one major organization that has fully embraced a Wiki approach failed to impress CLRN reviewers.

Looks like there will be big changes to the higher education sector over the next couple decades. Even if there are problems with open source textbooks, the “Edupunks” will continue to drive this education 2.0 movement. Fast Company has a interesting article about this.

Is a college education really like a string quartet? [...] If you want to perform a proper string quartet, you can’t cut out the cellist nor can you squeeze in more performances by playing the music faster. But that was then — before MP3s and iPods proved just how freely music could flow.

[...]

The edupunks are on the march. From VC-funded startups to the ivied walls of Harvard, new experiments and business models are springing up from entrepreneurs, professors, and students alike. Want a class that’s structured like a role-playing game? An accredited bachelor’s degree for a few thousand dollars? A free, peer-to-peer Wiki university? These all exist today, the overture to a complete educational remix.

The article is 4 pages long, and I would highly recommend it if you’re interested in higher education reform. They conclude with

The transformation of education may happen faster than we realize. However futuristic it may seem, what we’re living through is an echo of the university’s earliest history. Universitas doesn’t mean campus, or class, or a particular body of knowledge; it means the guild, the group of people united in scholarship. The university as we know it was born around AD 1100, when communities formed in Bologna, Italy; Oxford, England; and Paris around a scarce, precious information technology: the handwritten book. Illuminated manuscripts of the period show a professor at a podium lecturing from a revered volume while rows of students sit with paper and quill — the same basic format that most classes take 1,000 years later.

Today, we’ve gone from scarcity of knowledge to unimaginable abundance. It’s only natural that these new, rapidly evolving information technologies would convene new communities of scholars, both inside and outside existing institutions. The string-quartet model of education is no longer sustainable. The university of the future can’t be far away.

Entrepreneur and software developer Bruce Eckel expressed some of his thoughts about the edupunk movement as a part of a post about examples of “upside down thinking”

If you’ve been to college, you know that colleges, professors and textbook publishers collude to create an artificial economy to extract more money from the students (usually, their parents). The fact that such behaviour is institutionalized is an early indicator that something is wrong. Add to that the research granting system whereby a university takes half or more of the money granted to a professor for the privilege of being associated with the institution. And what most students have observed is that researchers don’t make the best teachers, even though they are typically forced to also teach, a task that is often relegated to graduate students.

Colleges and universities can get away with this kind of behaviour because they’ve fixed the game. For success in life, the story goes, you need to go to a college or university, and the reputation of the institution will get you a better job and higher pay. Of course, what an employer really wants is someone who can figure things out and is unafraid of taking risks. Does going to an expensive university guarantee this, or are you even more likely to find a go-getter by seeing who has paid their own way through a community college and then a state university?

[...]

Take just one thing: the eyes-forward nature of most classes. Again and again, studies show that lecturing is just about the worst way to transfer information. But by controlling the game, institutions don’t need to change. The Edupunk movement is going to use the Internet to route around the roadblock of traditional learning, and (as is so often the case) the colleges and universities will be playing catch-up to whatever emerges.

You can read the rest of it here.

Technology is changing education in a similar way to how it’s changing the music industry. It’s getting rid of the publishers by connecting content creators directly with consumers. Record labels arose in the mid 20th century because musicians had a distribution problem while music fans had a music scarcity problem. Record companies solved both those problems simultaneously by recording and distributing music to every corner of the developed world in the form of a physical media from records to cassette tapes to CDs. Physical media has a high barrier of entry, so for a long time, a few record companies had a monopoly over the music industry.

Record companies took advantage of this and sometimes even took a majority of the revenue in sales from the artists. Artists had to use record companies for distribution because it was too expensive to do it themselves. As a result, the few musicians that were popular enough to make money became more popular because they could spend more money on distribution while independent artists struggle to survive. The emergence of the Internet as a content medium is flattening the playing field. Indie bands like radio head have been very successful at delivering their music online straight to their fans, no record labels involved. Itunes allowed fans to purchase a single song rather than an entire album, it allows potential patrons to get a sample of the music before purchasing. Independent artists can publish songs at a much lower cost than through traditional distributors.

Binding and distribution of textbooks is the high barrier of entry in the education industry today. We’re seeing the early signs of the digital revolution in education, no doubt it will go through similar stages as the music industry with resistance from distributors, but sooner or later resisting the trend will become too expensive and only those embracing the new form of education will survive. It’s good to see some real competition to the inefficient institutionalized education we have today.

My Lists Problem

August 23rd, 2009

I like lists. Lists are simple one dimensional structures. They can be ordered, or chaotic. I make lots of them, and you probably do too.

I have a list of things to do, a list of books I want to read, a list of websites in my bookmarks, a list of good ideas, a list of quotes from various famous people, and many more.

The problem is that they’re not all in one place. Some of those lists live only on my mind because it’s too inconvenient to write them down especially when chances are I’m going to lose them anyway.

I want a better way to manage my lists. Google Tasks is great for managing my todo lists, and any lists that where items are frequently added and removed, because it’s convenient to do so. But it’s messy. Each list needs it’s own category, but no sub categories, no tags, no way to order those categories. If you have lots of lists, Google Tasks just doesn’t scale to meet your needs.

I want lists to be available where ever I go, I want to be able to share my lists with other people, I want my lists to be searchable, tag-able, and scalable.

Do other people have list problems? Maybe I should try and solve it.

This Is Why Sms Is Expensive, And Google Is Trying To Solve This Problem

August 19th, 2009

A few days ago I posed the question, “why is sms so expensive?“. In a related opinion article on the Wall Street Journal, Why AT&T Killed Google Voice, Andy Kessler explains how Google voice is bringing real competition to the market.

With Google Voice, you have one Google phone number that callers use to reach you, and you pick up whichever phone—office, home or cellular—rings. You can screen calls, listen in before answering, record calls, read transcripts of your voicemails, and do free conference calls. Domestic calls and texting are free, and international calls to Europe are two cents a minute. In other words, a unified voice system, something a real phone company should have offered years ago.

[...]

As any parent of teenagers knows, text messages are 20 cents each, or $5,000 per megabyte. After the first month and a $320 bill, we all pony up $10 a month for unlimited texting plans. Same for Internet access. With my iPhone, I pay $30 a month for unlimited data service (actually, one gigabyte per month). Is it worth that? The à la carte price for other not-so-smart phones is $5 per megabyte (one-thousandth of a gigabyte) per month. So we buy monthly plans. Margins in AT&T’s Wireless segment are an embarrassingly high 25%.

The trick in any communications and media business is to own a pipe between you and your customers so you can charge what you like. Cellphone companies don’t have wired pipes, but by owning spectrum they do have a pipe and pricing power.

Aren’t there phone competitors to knock down the price? Hardly. Verizon Wireless, T-Mobile and others all joined AT&T in bidding huge amounts for wireless spectrum in FCC auctions, some $70-plus billion since the mid-1990s. That all gets passed along to you and me in the form of higher fees and friendly oligopolies that don’t much compete on price. Google Voice is the new competition.

AT&T has an exclusive deal with apple in the US, and this, Mr. Kessler leads us to believe, is part of the reason why Apple rejected the Google Voice iPhone App.

There should be more companies like Google.

[video]Visualizing 10 dimensions

August 19th, 2009

Simple yet effective educational video on how we can imagine 10 dimensions. Most people have trouble imagining 4 dimensional objects, so trying to get someone to imagine 6 more is an ambitious task. This is a hard problem that Rob Bryanton is attempting to solve through this video. He does so through analogies and reducing the problem into simpler ones. i.e. reducing higher dimensions into lower ones.

The supposed connection and analogies he makes towards string theory and the physical world are wrong according to physicists, so don’t take them seriously. Nevertheless, it’s a great educational video to help you understand a beautiful idea. :)

Why Is SMS So Expensive?

August 16th, 2009

It’s a 160 character string of information. Why does it cost me 25c to send? 160 bytes of data at 25c is $1638.40 per MB! A decent wireless data plan in Sydney costs about 2.5c per MB, so an sms message costs 65,536 times as much as a Internet message of the same size!

Ok, I’m not being fair here. There are sms headers involved that make the message more than 160 bytes. There will be packet losses along the way that might require retransmission, but even so, it certainly will still be more than 50,000 times as expensive per MB.

The major advantage of sms is that it uses a push protocol rather than the pull protocol used in email. This means that when Jannet sends an sms to Margaret, she can be sure that Margaret will receive the message and find out about her wonderful new pair of shoes. In a push protocol, Janet’s message gets sent to an sms server that will keep trying to send the message to Margaret until Margaret’s phone receives the message and notifies Margaret with that annoying message ring-tone that you hate. If she was using a pull protocol, then the message will still be stored on a server, but Jannet will have to wait until Margaret logs into the server and checks for the message.

This surely isn’t 50,000 times as valuable as normal Internet messages. Most modern phone can be programmed to check for messages periodically and automatically. To Margaret, a phone that can do that will be no different from a phone that gets notified of a new message by a server. In fact, a third party can easily set up a server that can offer a push message service at a far lower price than sms. There are already iPhone applications that do this.

Sms is way overpriced. Telcos are not making an effort to make it cheaper because the majority of consumers don’t know that it can be cheaper and are happy to pay the higher price. As soon as smart phones become more common and push message services become more prominent, sms will be dead.

Quote: All Achievement, All Earned Riches, Have Their Beginning In An Idea

August 14th, 2009

This is a first among many to come of a collection of quotes that have inspired me.

Today’s quote is from the authors preface of Think and Grow Rich by Napoleon Hill, perhaps the first popular writer of the personal success literature genre of books.

Achievement, All Earned Riches, Have Their Beginning In An Idea

When Duplicates Are Good

August 9th, 2009

The lights in my house force me to go through something similar to Schlemiel the painter’s problem. It is located at the entrance to the living room. The problem is that the entrance to the bedrooms is on the other side, so when I’m going to bed, I have to walk back to the other side of the room in order to turn off the lights, and then walk back in the dark into my bedroom. While I appreciate the physical exercise (and memory exercise for remembering where all my furniture are so I don’t trip over them), it surely wasn’t a design goal for the location of the light switch.

This problem could benefit from duplication. In fact, my previous apartment had exactly this. Two light switches, one at each end of the living room. you enter from the doorway through the living room and exit to the bedrooms. This let me turn off the lights as I exit a room rather than forcing me to turn off the lights from the other side of the room then walking the rest of the way in the dark.

I say duplication, some would say redundancy, but redundancy implies that the second copy is useless. That’s not the case. Duplicating things can improve reliability. Harddrives in the RAID configuration improve reliability by storing the same data in two or more seperate harddrives at the same time. If one of the harddrives fail, there’s another copy readily available. The topology of the internet relies on DNS. DNS servers are duplicated around the world to mitigate the chance of a DoS attack that would bring down the internet.

You might duplicate your house keys in case you lose a set. Accountants record a transaction twice in two seperate places to help prevent fraud and human errors. A deduction from one account must be followed by an equal and opposite addition into another. (I believe that’s the third law of accounting or something). Websites duplicate links on the same page so people find things easier. You’re duplicating information when you put todo list items on both your calendar and your diary to help you remember them.

Duplicates improve convenience and reliability. The person who designed the lights in my apartment failed to do the former.