Welcome
-
Recent Posts
Recent Comments
- Souvik patra on রুবিকস কিউব (পর্ব ৪) : রুবিকস কিউবের সমাধান
- Al amin on গণিত অলিম্পিয়াডের প্রস্তুতি: কিছু সাধারণ প্রশ্নের জবাব (FAQ): পর্ব ১
- Rakin sadab on গণিত অলিম্পিয়াডের প্রস্তুতি: কিছু সাধারণ প্রশ্নের জবাব (FAQ): পর্ব ১
- MD. Rakin sadab on ফিজিক্স অলিম্পিয়াডের প্রস্তুতি নিয়ে কিছু কথা: ইমরোজ খান (BUET, EEE)
- Riyan on ফিজিক্স অলিম্পিয়াডের প্রস্তুতি নিয়ে কিছু কথা: ইমরোজ খান (BUET, EEE)
Archives
Categories
-
Links
Tag Archives: banglapi
Bangla Pi: Is Affordable Computing the Silver Bullet to Development?
(A version of this article was published at the Conference for Asian Countries on Digital Government)
“Look, this cat is moving!”, Duti, a 12 years old girl from Hajipur girls’ school exclaimed. Her eyes fixated on the 10 inch LCD screen of a bizarre device with wooden frame labeled “Bangla Pi” that clearly was concealing a prototype. And standing five feet away from her, the incredible feat to enable a girl from the one of the most remote villages of Bangladesh to program a computer struck me. This village girl just animated a cat with the programming language scratch, developed in the MIT Media Lab.
To understand the story behind this rather extraordinary scene, we have to jump back six months in time to my dorm room at Harvard. One day, while working with raspberry pi, a credit card sized computer that is sold for 35 USD, the idea of using a similar hardware architecture as a medium to affordable computing and access to information crossed my mind. As I dug deeper, I realized how far the semiconductor industry has come. By Moore’s law, we have already seen how computing power has doubled every 18 months over the past few decades. As a result, the cellphone in my pocket has a processor with more computing power than the computers that launched Apollo mission to the Moon!
The basic idea behind this affordable computing tool was to use the smart-phone processors (which can be bought for as little as 3 USD in the chinese market). Using this processors along with open source operating systems such as Debian or Ubuntu, we can simulate a desktop computer like experience. I used the cheapest processors and put it together with LCD panels to make a device that can do everything a typical computer can do, but for a much lower price. I named this device Bangla Pi.
I went back to Bangladesh during my winter break of senior year (2015) on a fellowship from Harvard South Asia Institute and made 20 of these prototypes. I bought electronics parts from China and spent a long week making those devices. Because I did not not have access to a 3D printer (would not be cost effective anyways), I just went to local photo frame makers to custom build wooden casing for them. These bizarre devices could function exactly the same way as typical desktop/laptop computers and had USB ports for a mouse and a keyboard. It was also possible (after a lot of hacking) to connect wifi modules to the devices to support connectivity. It cost me ~65USD to make each of these devices and the LCD panels were the most expensive parts (~40 USD each). However, talking to some of the chinese manufacturers I found that at scale these price can be much lower.
With these devices, I ran a few pilot project in Dhaka and a few very remote villages in Bangladesh. The results I found were amazing–the students (who were between 12-18 years old high school students) seemed to pick up these skills very, very quickly. I was amazed how some of them, without having used computer before, made computer games with the programming language Scratch, an interactive, easy to use, graphical programming language that enables young students to program by moving small code blocks. The most important lesson that I learned from this experience was that we can enable natural learning with similar devices and with connectivity we can empower students learn anything they wanted to learn about.
Now that we have a very affordable computing platform that promises to deliver connectivity and computing power, should we just distribute these devices en-masse? While I truly believe in the potential of Bangla Pi and similar affordable computing platforms, I think answer is more complex than a simple yes or no. Although it takes a bit of naiveté and a leap of faith to do something as crazy as connecting the world where many other challenges are presumably of higher importance today, I would argue that this naiveté even part of highly acclaimed and widely distributed devices such as one laptop per child (OLPC) by MIT Media Lab founder Professor Nicholas Negroponte. While his idea of sub 100 dollar computer was bold, the most important thing OLPC missed missed were the right context and the ability to emulate an operating system similar to a standard desktop PC. First of all, OLPC lacked a clear goal as an use case, whereas for Bangla the goal was clear–enable learning how to operate computers and incorporate it to a standard curricula.
Another important aspect that many of the technopreneurs forget is the importance of training and customer service. We might deliver computers to every school (with enough funding) but if we do not train the teachers and cannot make sure that the devices will be functional after a few months, then we are probably introducing an overhead instead of helping the educators. For this very reason, we designed Bangla Pi as modular units. There are five different units in Bangla Pi–processing unit, power unit, display units, input unit (mouse/keyboard) and each of these individual units (except the display, which is fairly durable) costs under 10 USD and is very easy to replace in a plug and play fashion. So we can create a 10% redundancy with spare parts (example–in a school with hundred computers) and easily make sure that all of the units are working fully.
I have studied many literatures and books on the topic of computing in developing countries. One that truly grabbed my attention was The Geek Heresy by Kentaro Toyama, a fellow Harvard alum and a former Microsoft Research fellow in India (and current professor at the University of Michigan). In his book, he brought up many important points regarding how many of these silver bullet solutions for development with technology have failed. And from his experience through working in India at Microsoft research, he also explains the nature of some of the projects that truly succeeded. While it is beyond the scope of this article, I would like to talk about the main point of the book which is that technology primarily amplifies human forces, but if there is no force existent today no amount of technology will help. The same philosophy was apparent in Microsoft’s founder Bill Gates’ book The Road Ahead, in which he said “The first rule of any technology used in business is that automation applied to an efficient operation will magnify the efficiency. [...] Automation applied to an inefficient operation will magnify the inefficiency”. Therefore, the primary point that we need to address before we just go ahead a make all the schools digital is that we need to make sure our human force (i.e. the teachers) are at a state where they can take part in this amplification process.
Now the question stands—in the context of Bangladesh and similar developing countries, how can we leverage the technologies such as Bangla Pi to amplify the human capabilities? At the risk of sounding cliché, we need to ask how we can empower the people with these technologies and make sure they have access to the information and services that they need to improve their quality of life. I personally believe that the possibilities are endless. Let me start with a few possible key game changers:
1. Improving education with human augmented technology: We could develop a centralized digital pedagogical system where typical hour long teaching method would be augmented by a 15 minutes of visual contents. This could both take a bit of teaching burden off of the teachers’ shoulders and make learning much more interesting for the students.
2. Access to better health information and services: We could empower the current network of health workers to be able to connect with the people in the villages better via technology products such as Bangla Pi. Moreover, they would be able to direct the people on where to find the best healthcare by providing information via these devices.
3. Marketplace for the farmers: Without getting into details, a major shift in the current marketplace could be achieved if we could eliminate the information asymmetry that exists in the agri-marketplace. This information asymmetry only helps the middlemen and harms the farmers and end consumers.
For all these problems to be solved, we need to acknowledge the existing solutions and see how technology based solutions using connected devices such as Bangla Pi could help us solve these problems by amplifying the existing human efforts. While a very strong supporter and believer of technology, I do not think that technology alone can solve all our problems (maybe in 20 years we will have strong AI (artificial intelligence) in place and it will be a different story, but not today). However, technology augmented with human power can amplify the efficiency of the human force by manifold and as a result can fundamentally change the way billions of poor people live. Just imagine a village in Bangladesh, where the farmers can get information from the agriculture within a few seconds and can get health information when his wife is pregnant. Imagine a world where his kids go to school and get education augmented by thought provoking visuals and proven pedagogical guidelines. Imagine a world where that very farmer can auction his crops at the best price in a marketplace where information asymmetry does not exist. Imagine a world where the power of the government is distributed to the masses because everyone is well informed. That future, enabled with technology and connectivity to vastly amplify and truly empower the human efforts is the future I dream of everyday.
Project Bangla Pi: Why I Care about Affordable Computing
It is ironic that similar to the way computers understand the world with compiled instructions in binaries (0s and 1s), they have divided the world into a binary group system– the group that knows how to use computers and the one that does not.
Most of the supporters of computer education these days start their pitch with teaching everyone coding and claiming that everyone will be computer scientists. While I would love that future, I feel that this pitch is coming from a first world perspective where most of the kids already owns an expensive computer and know about computers and smartphones from an early age. With this we are majorly discounting the rest of the world, where many kids have never seen computers.
Currently the world literacy rate is 84.1% (2013), but the digital literacy rate is much lower than that. With more and more computers being used every day from tasks as simples as writing emails or applying for jobs over internet to more complex tasks such as writing programs or using computers in factories, I don’t think I need to convince anyone that we need to teach young kids how to use computers. These basic computer skills are becoming as important as learning how to read and write. For that purpose we need computers accessible to all kids.
There is no doubt that the world needs more quality educational materials. Khan Academy clearly showed us how we can empower individual students if we just give them access to quality educational contents. The kids can learn themselves. Especially in many parts of the world getting a quality education is hard because of the lack of good teachers. While I don’t believe that MOOCs (online video lectures) can be as effective as direct classroom education and solve all of our problems, I believe augmenting classroom study contents could be a great use. For example, when a kid learns about history we can reinforce the learning experience with some multimedia contents. I believe flipped classroom model could be hugely successful if we can find a channel to deliver those contents to the students.
Finally I’d get back to the coding part. The kids who are already using computer for years, they should really learn to code or understand coding. They might not need to write thousands of lines of codes in future, but in this age of machine learning and massive automation, learning to code is going to be an invaluable skill for understanding the world. For example at Harvard, less than hundred students major in computer science every year, but this year 889 Harvard students took CS50, the legendary introduction to computer science class! This clearly shows why you should learn about computer science if you are already privileged to have computers.
The reason for this long and (hopefully) obvious discussion about the necessity of computers is that if we want to solve the problems of the world through better education, using computing devices is necessary. If I use the terms of Economics, computer is not a luxury good anymore– it is a necessity good for everyone. But with the average price of a good laptop being about a thousand dollar, buying computers might be a bit hard even for some people from the first world country. Now consider the countries like Bangladesh, where the average annual income per capita is 1044 USD, buying a computer for their kids is next to impossible for most of the families.
As a naive young college student, I have been thinking about this digital divide issues for a while. Last semester, when I was playing with a raspberry pi at my dorm at Harvard, I was thinking why we cannot just use these and some cheap LCD panels to make some small computers for the young students. For those who do not know what this is, Raspberry Pi is a computer board with 900 mhz (overcloked) CPU, 512MB ram, and 8 GB disk space. Basically this is equavalent to the computing power of a mid range smartphone or tablet. But do we really need that much computing power for teaching kids? It turns out–not really.
So I decided to do this over the winter break and got 15 raspberry pi boards and imported some cheap lcd panels from China (getting them cleared from customs was hard, but that is a story left for another day!). Then I scouted all over Dhaka to find cheap peripherals such as keyboards, mouse, and micro sd cards. With all these parts and many hours of labor (plus wooden frame made by the local photo frame makers), I finished assembling 15 devices and custom built a power supply system for all of them.
While assembling these was nontrivial, making the OS ready was another challenge. I have been working on using different flavors of debian for a while, but running the OS on the ARM chip is a bit hard given the resource constraints. So I had to do a bit of modification of the debian based raspbian OS and had to make sure we have everything in the Bangla Pi OS that I distributed with the 15 prototypes. The great thing is that you can do almost anything you can do with a typical computer. While this is does not have a lot of CPU power, so far they proved them to be adequate for most of the educational purposes.
So this winter I am running three pilot projects to see what we can do with these devices. We are running these workshops in three places. One in Dhaka (where all these kids have been using computers for years), another in Pakundia, a upozilla (sub-district) in Kishoregonj, and finally one in a small village of Sylhet. I am just trying to see how all these kids with very different computer literacy level interact with computers and how we can use these devices to improve education for them. I am teaching Python programming to the students in Dhaka and for the other students I would limit it to Scratch, which is a visual programming tool developed by MIT media lab.
It would be an understatement to say that organizing these has been just difficult. Thanks to my mom, and volunteers, who have been working tirelessly to help organize these workshops and create the curriculum. Also thanks to Harvard South Asia Institute for their winter grant that enabled me to do this project.
Currently the computers cost about $85 to make, but if we could mass produce them (at least couple of thousands), it is very possible to drive down to the cost with the new technology we have in R&D. This could be a great step toward making computers accessible for all. For the poor this could be a great first computer and for the privileged ones this could be a programming sandbox.
I believe that some people are better than others in some areas because of their inherent ability to excel in that. I also believe that these talented people are fairly randomly distributed regardless of geolocation or income level. So with affordable computing for everyone if we could get rid of the digital divide and make education a level playing field for the kids from the first world to those from the third world, we would be the best talents from all over the world to solve our important problem. Then we will be one step closer to having the world we all want to live in.