Things that I find interesting, mostly about nature, science, mathematics, programming, and Thailand's fight against corruption.
Monday, December 31, 2007
A List of Top Ten Lists For 2007
Wired Magazine's Top 10 Scientific Breakthroughs of 2007
Top Ten (collections of ) smart videos on YouTube.
Top Ten Most Popular Torrent Sites.
If you enjoy reading top lists of various topics, you can take a look at the List Universe.
Saturday, December 29, 2007
การดูโหงวเฮ้งอาจจะไม่ใช่เรื่องหลอกลวง(ไปทั้งหมด)!!!
--- - ---- - ----- ---------
Monday, December 24, 2007
ระวังการเลือกตั้งด้วยเครื่องอิเลคทรอนิค e-Voting
ผมปักใจเชื่อว่ามีการโกงเลือกตั้งในสหรัฐในปี 2000 และ 2004 เนื่องจากผลคลาดเคลื่อนจากโพลที่มีมาตรฐาน (ผลคลาดเคลื่อนเป็นบวกกับ Republican เสมอในทุกแห่งที่มีความคลาดเคลื่อน นอกจากนี้ยังคลาดเคลื่อนเฉพาะในเขตที่ใช้ e-voting ด้วย, อ้ออีกอย่าง ผมพูดถึงโพลมีมาตรฐานเท่านั้นนะครับ ไม่ใช่โพลไม่มีมาตรฐานเช่นอันนี้ )
ถ้ามีผู้แทนในประเทศไทยมาเสนอ e-voting ผมขอแปลงคำเตือนของ Don Corleone ในหนัง The Godfather มาใช้ว่า "Listen, whoever comes to you with this e-voting meeting he's the traitor. Don't forget that." คนที่จะนำเสนอไม่ Stupid (ไม่รู้ว่า e-voting โกงง่าย) ก็ Evil (กะจะโกงซะเอง) ล่ะครับ
--- - ---- - ----- ---------
P.S. ตอนผมเป็น Freshman ที่ Caltech อาจารย์ให้การบ้านให้ออกแบบการลงคะแนนเสียงแบบ e-Voting ปรากฎว่าทุกคนทำผิดหมดเพราะอาจารย์แค่ถามเพิ่มว่าคุณรู้ได้อย่างไรว่าผลไม่ถูกเปลี่ยนแปลง ใบ้กันไปหมดครับ
Tuesday, December 18, 2007
An Easily Understood Explanation Of The Sub-prime Crisis
Sunday, December 16, 2007
Solving Sudoku Puzzles
Saturday, December 15, 2007
Microsoft Has An Upgrade For Vista Already!
I already have it on my ThinkPad and it's pretty good. I heard many people upgraded their Vista-bundled PC to this OS too.
Thursday, December 13, 2007
เครือข่ายประชาชนต้านคอร์รัปชัน (คปต.)
องค์กรที่ผมอยากแนะนำวันนี้ก็คือ เครือข่ายประชาชนต้านคอร์รัปชัน (คปต.) ลองเข้าไปอ่านดูครับ สามารถรับสมัครรับข่าวสารได้ รวมถึงสมัครเป็นสมาชิกเพื่อมีส่วนร่วมในการต่อสู้เพื่อสิทธิของประชาชนธรรมดาอย่างเราด้วย
ถ้าไม่รู้จะอ่านอะไรก่อน ก็ลองอ่านอันนี้ดูครับ จะได้รู้ซึ้งถึงความหน้าไม่อายของพรรคที่ได้ทำ และจะทำความเสียหายระยะยาวต่อลูกหลานพวกเรา ไม่ยาวมากหรอกครับ จะได้ช่วยกันบอกเพื่อนๆว่าอะไรเป็นอย่างไร
Tuesday, December 11, 2007
Immunize Yourself Against Business How-To B.S.
Python: Programming Is Fun Again!
My thought exactly.
Any programmer can learn it in an afternoon and be productive in a day. As a bonus, the code is naturally easier to read, so after half a year, I can pick up my own old code again in 10 seconds. And I'm just an average amateur programmer. (Amateur = doing it for love; Professional = doing it for money. Look at the etymology here and here.)
All CS students should at least know about it. I don't understand why introductory programming classes in Thailand are being taught with C, C++, C#, or Java while half the class would copy the other half's homework. No learning happens in half of the brains!
My posts about Python in the past are here.
Saturday, December 01, 2007
Friday, November 30, 2007
The Secret To Raising Smart Kids
The article summarizes how parents might unintentionally harm their kids by praising them the wrong way.
It seems that tenacity is generally more important than talents. The willingness to learn and fail is necessary for people to develop. In my personal experience of meeting many genuine mathematical and scientific geniuses, this is generally true.
Thursday, November 29, 2007
I Think I Have The Fastest DVD Writer In The World,...
Wednesday, November 28, 2007
จดหมายที่พลาดรางวัล 0.1 ล้านบาท
12 มีนาคม 2550
สวัสดีครับ
ผมส่งเรื่องราวของผมมาให้พิจารณาครับ ผมได้ทำการทดลองและปรับเปลี่ยนพฤติกรรมการขับมาได้สองปีแล้ว
เครื่องรถของผมมีขนาด 2,800 cc และตัวรถก็ค่อนข้างหนัก เมื่อก่อนผมมีนิสัยการขับแบบไม่คำนึงถึงความประหยัดเท่าไรนัก จนกระทั่งเวลาสองปีที่ผ่านมาที่ราคาน้ำมันเพิ่มขึ้นอย่างรวดเร็ว ผมจึงพยายามเปลี่ยนวิธีขับรถให้เป็นวิธีที่ประหยัดมากขึ้น รวมถึงได้ทดลองใช้น้ำมันยี่ห้อต่างๆที่มีขายอยู่ ผมทำการคำนวณระยะทางเป็นกิโลเมตรต่อน้ำมันหนึ่งลิตรในทุกครั้งที่ผมเติมน้ำมัน ใช้เวลาทดลองอยู่ประมาณ 8 เดือน ผลก็คือผมพบว่ามีความแตกต่างที่วัดได้เมื่อผมปรับปรุงพฤติกรรมการขับของผม หลังจากทำการทดลองเสร็จผมก็ใช้น้ำมันเบนซิน 95 คาลเท็กซ์ +Techron ตั้งแต่นั้นมา
ผมขับรถโดยคำนึงถึงความประหยัดดังนี้ครับ
2. วางแผนชะลอความเร็ว จะได้ไม่ต้องเบรกกระชั้นชิด และไม่ต้องเร่งเครื่องเกินความจำเป็นแล้วก็ต้องรีบหยุด
3. รักษาความเร็วเฉลี่ยไว้ไม่เกิน 90-100 กม/ชม. ผมพบว่าที่ความเร็วระหว่าง 90-140 กม/ชม. การสิ้นเปลืองเชื้อเพลิงจะแปรผันตรงกับความเร็ว เช่นขับรถที่ 120 กม/ชม. จะสิ้นเปลืองกว่าที่ 100 กม/ชม. ประมาณ 20% เมื่อขับถึงจุดหมายเดียวกัน (เพราะ 120 กม/ชม. มากกว่า 100 กม/ชม. อยู่ 20% จึงสิ้นเปลืองกว่าประมาณ 20%)
4. วางแผนเส้นทางเดินทาง และเวลาการเดินทางเพื่อลดการจราจรติดขัด และเวลาที่จอดรถเผาน้ำมันไปเปล่าๆ
5. ใช้น้ำมันเบนซิน 95 คาลเท็กซ์ +Techron หลังจากได้เปรียบเทียบกับน้ำมันยี่ห้อต่างๆแล้ว ผมพบว่าน้ำมันของคาลเท็กซ์ดีกว่าบางยี่ห้ออย่างเห็นได้ชัด (วัดจากจำนวนกิโลเมตรต่อน้ำมันหนึ่งลิตร) รวมถึงเสียงเครื่องยนต์ก็เรียบทำให้น่าเชื่อว่าการทำงานของเครื่องยนต์คงจะทำงานได้อย่างมีประสิทธิภาพ
ผมพบว่าการขับรถโดยคำนึงถึงความประหยัดดังกล่าว ทำให้สามารถประหยัดน้ำมันในการขับทั่วไปจาก 8.2 ± 0.2 กิโลเมตรต่อลิตร กลายเป็น 9.4 ± 0.2 กิโลเมตรต่อลิตร หรือประหยัดได้ประมาณ 15% อย่างง่ายๆเลยทีเดียว ขณะที่เวลาที่ใช้ในการเดินทางก็เท่าเดิม เนื่องจากความเร็วเฉลี่ยเท่าเดิม แต่ประหยัดเงินและทรัพยากรได้ชัดเจน อีกทั้งยังมีความปลอดภัยจากความเร็วที่ไม่สูงเกินไป และไม่ลำบากในการปฏิบัติแต่อย่างใด (ผมตรวจสภาพรถ เครื่องยนต์ และลมยางให้อยู่ในสภาพปกติเสมอ เลยไม่ได้ทดลองเปรียบเทียบการใช้น้ำมันเวลาสภาพรถผิดปกติ)
ขอแสดงความนับถีอครับ
ดร. พงศกร สายเพ็ชร์
Sunday, November 25, 2007
Yet Another Example In Which Power Corrupts
The funniest/most ironic sentence in the article for me is "Here is a historical irony: the first Dalai Lama was installed by a Chinese army."
You might ask, what would be an alternative to
--- - ---- - ----- ---------
P.S.
1. I don't automatically say a religion is non-sensical. However, to a very high probability, if you use the "and" conjunctive between all teachings in a religion, the result would be false. (Since True and True and True and False = False.) While there are many true/applicable/moral things in each religion, the trick is to separate the true/applicable/moral teachings from non-sensical ones. I think our ability to discern which is which would be enhanced if we subscribe to humanism in the first place.
2. See Buddhism role in my Things to Teach My Children (Version 1.0). Even there, my children and I must have some ability to separate the good parts from the non-sensical parts.
3. You can guess my stance on mixing Buddhism and Constitution in Thailand. The last attempt of such mixing was significantly sponsored by a certain temple known for its exquisite blend of {Buddhism + Greed + Capitalism + Conflicts of Interest + Human Stupidity} that would have benefited greatly from a state-backed religion. Thank goodness there were enough people with clear head in the parliament.
Friday, November 23, 2007
DIY Synthetic Biology
I think Thailand could have a shot at doing significant work in this field. To start, drop by the Registry of Standard Biological Parts and look through the catalog of what is available. You can start on this page. Maybe we can make bacteria clean up our pollution or collect energy for us or something much more imaginative.
This reminds me of a sci-fi story I read many years ago titled "The Self-Made Man" (or something similar, I'm not sure) where children got genetic-engineering kits as gifts and the protagonist, starting as an enforcement agent/assassin of a GMO-producing corporation, created an empire based on genetic-engineered inventions. I think I have a good chance to see that sci-fi story becomes reality.
--- - ---- - ----- ---------
*If you think bacteria are yucky, I would like to remind you that the number of bacterial cells in your body outnumbers your own human cells 10 to 1! Read this article to blow your mind :-)
For an easy overview of cells, see this HowStuffWorks: How Cells Work article.
Human is a
Thursday, November 22, 2007
Steel Poetry*: One Pilot's Description of His Plane
The SR-71 Blackbird is one of my all-time favorite airplanes. (Others are A-10 Warthog (look at it's 30mm Gatling gun!), Messerschmitt Bf 109, P-51 Mustang, and F-4 Phantom. I spent a lot of time when I was between 10 to 16 poring over various weapon systems.)
The Best Definition Of Web Services :-D
I found the above definition in the Bourne Shell Server Pages website.
Additional choice quotes:
"The basic idea behind all server page technologies is this: rather than writing code that generates an HTML document on-the-fly by writing it out as a series of print statements, you start with a "skeleton" HTML document and embed the code right inside it. Voila! Instead of having a tangled, unreadable, unmaintainable mess of HTML embedded in source code, you have a tangled, unreadable, unmaintainable mess of source code embedded in HTML."
"Bourne Shell Server Pages are ordinary ASCII text files, with the special extension .shit, which denotes "Shell-Interpreted Template." The result of invoking the page compiler on a .shit file, is, naturally, a shell script. (It occurred to me that this file extension might seem objectionable to some, but since it quite accurately—if unintentionally—conveyed my sentiments toward Web technology in general, I decided that it should be left unchanged.)"
"Despite the fact that building Web applications is about as enjoyable as having one's private parts caught in a cement mixer, it continues to be an extremely popular software development paradigm."
"Installation is left as an exercise for the reader."
Wednesday, November 21, 2007
Some Links For Educational Books
For teaching children to read in English: Free-reading.net and Starfall.com.
A Wikimedia project focusing on books: Wikibooks.
Classic English books: 48 Classic Books to Boost Your Learning Experience.
Monday, November 19, 2007
An Invitation To See Me Making A Fool Of Myself
If you have some free time to drop by the ICT Expo, you can find me at Jupiter Room 11-13, Impact Challenger Hall. The time is 14:35 to 16:00.
Derivatives Are Free. Integrals Are One Baht Each
Thursday, November 15, 2007
We Have A Testable Candidate For The Theory Of Everything!
หวยกับสิ่งศักดิ์สิทธิ์ (หรือทำไมผมควรจะหยุดรับรู้ข่าวสารบ้านเมืองไทย)
1. โอกาสที่จะถูกหวยน้อยมาก
บางคนบอกว่ามีการดลบันดาลจริงๆ ซึ่งคำถามที่เราต้องถามก็คือรู้ได้อย่างไรว่าเป็นการดลบันดาล และไม่ใช่ random chance หลักฐานเป็นอย่างไร คุณภาพของหลักฐานเป็นอย่างไร เราจะแบ่งแยกอย่างไรระหว่างผู้วิเศษกับนักมายากล
Sunday, November 11, 2007
More Pornography --> Less Rape?
I was directed to that paper because I read this article by Steven E. Landsburg, the author of a very entertaining book, The Armchair Economist.
I wonder what the data for Thailand looks like.
There's a criticism of the paper here. An alternative possibility is suggested that the Internet might reduce the number of reported rapes, instead of the number of the crime.
Friday, November 09, 2007
Thursday, November 08, 2007
"Semantic Associations Between Signs And Numerical Categories In The Prefrontal Cortex" or MONKEYS CAN COUNT!
Next, we should teach them number theory so they can work on prime numbers. For some adventurous monkeys, we might try calculus, set theory, or differential geometry! Oh wait, we already have such monkeys, they are called math and physics grad students! :-D
Here is the Author Summary:
We use symbols, such as numbers, as mental tools for abstract and precise representations. Humans share with animals a language-independent system for representing numerical quantity, but number symbols are learned during childhood. A first step in the acquisition of number symbols constitutes an association of signs with specific numerical values of sets. To investigate the single-neuron mechanisms of semantic association, we simulated such a mapping process in rhesus monkeys by training them to associate the visual shapes of Arabic numerals with the numerosity of multiple-dot displays. We found that many individual neurons in the prefrontal cortex, but only a few in the posterior parietal cortex, responded in a tuned fashion to the same numerical values of dot sets and associated shapes. We called these neurons association neurons since they establish an associational link between shapes and numerical categories. The distribution of these association neurons across prefrontal and parietal areas resembles activation patterns in children and suggests a precursor of our symbol system in monkeys.
รักในหลวงแต่ปาก
Friday, November 02, 2007
เดาส่วนแบ่งตลาดโน๊ตบุ๊ก
ผมเลยคิดว่าถ้าสัดส่วนผู้ใช้คอมพิวเตอร์แต่ละยี่ห้อที่เข้ามากระดานข่าว เป็นสัดส่วนประมาณเท่าๆกันในทุกยี่ห้อ เราสามารถเดาส่วนแบ่งตลาดของแต่ละยี่ห้อได้ Assumption นี้จะผิดถ้าผู้ใช้บางยี่ห้อเข้ามาที่กระดานข่าวมากกว่ายี่ห้ออื่น เช่นปัญหาเยอะจนต้องมาบ่นมากๆ ถ้า Assumption ไม่ผิดนัก นี่คือลำดับส่วนแบ่งตลาดโดยประมาณ:
สองคอลัมน์สุดท้ายเป็นตัวประมาณส่วนแบ่ง (แบบหยาบๆ โดยการอนุมานจากจำนวนกระทู้ หรือคำตอบ)
ส่วนแบ่งดูเหมือนจะแจกแจงแบบ Power-law distribution
แล้วไว้ผมจะหาข้อมูลอื่นๆมาดูว่าการเดาแบบนี้ใกล้ความจริงแค่ไหน
--- - ---- - ----- ----------
P.S.
1. ถ้าต้องการของทน แนะนำให้ใช้ ThinkPad ของ IBM/Lenovo (ทน ประกัน 3 ปีเป็นส่วนใหญ่ ศูนย์บริการดี)
2. ถ้าต้องการของเท่ห์ & สวย แนะนำ Mac (สวย ไม่โฉ่งฉ่างแบบหลายๆยี่ห้อ)
3. ควรซื้อประกันเพิ่มเป็น 3 ปี ถ้าประกันไม่ถึง เนื่องจากอาจจะเสียหลัง 1 ปี ถ้าอยู่นอกประกันจะซ่อมแพงมาก
4. ไม่ควรซื้อของถูกที่สุด
Thursday, November 01, 2007
Educate Yourself And Your Children With World-Class Lectures
Now anybody in the world who can understand English and has access to the Internet can be self-educated with these world-class videos, thanks to the magic of the WWW, the generosity of the lecturers and their employers, and people like Peteris who collect them for our consumption.
Thanks!
--- - ---- - ----- ---------
P.S.
1. I also found talks at TED very informative and entertaining. A great source of ideas and inspiration.
2. When will the people who invented the Internet and the World Wide Web win a Nobel Prize?
Wednesday, October 31, 2007
Causes (?) of Crime Rate Reduction
1. Fixing Broken Windows Effect: Fixing/preventing small crimes lead to fewer crimes in general. Criticism of the idea is here.
2. Legalized Abortion: Legal abortions lead to fewer unwanted babies, cutting down the number of criminals. Criticism here and here. However, in the extreme case, it's obvious that abortion does prevent crime--if there is no more baby, there will be no crime. :-D
3. Unleaded Fuel -> Less Crime: Presumably, lead turns people into idiots who commit more crimes. A paper can be found here.
It's interesting to note that abortion became legal in many US states around the same time that leaded fuel was banned.
If I have to bet which one is the most correct, I would bet on #3 more than on #2 and on #2 more than on #1.
I wonder what other toxic substances we are being exposed to will create problems in the coming decades.
Tuesday, October 30, 2007
Tatia, A Warrior Child
Meanwhile, Tanya was practicing her face-morphing skill. She looks different everyday:
Monday, October 29, 2007
You Too Can Be A Banker!
Muhammad Yunus was awarded the Nobel Peace Prize in 2006 for his work advocating lending money to entrepreneurs too poor for traditional bank loans. The Grameen Bank became a prototype for microcredit lending organizations all over the world.
Through the wonder of the Internet, you too can be a banker to the poor entrepreneurs throughout the world. Check out Kiva.org and MicroPlace ("Invest wisely. End Poverty.") I think this is a good thing for the world. Less poverty, more freedom, more education, less chance of being exploited.
Friday, October 26, 2007
Traveller's Guides To The Universe
1. The Atlas of the Universe. Don't forget to look at the whole map.
2. What we can expect to see outside the window when we travel very fast: What would a relativistic interstellar traveller see?
3. Also, can we see the Lorentz-Fitzgeral contraction when we travel very fast?
To have some ideas about how big the universe is, think about this: In one second, light can travel the distance equivalent to about 7 times the Earth circumference. It takes light about 8 minutes to travel fromt the Sun to Earth. It takes light about 4 years to reach the nearest star outside the solar system. And it takes more than 10,000,000,000 years for light emitted by the farthest objects we can observe to reach Earth.
So, my plan is to live long enough to upload my brain state to cyborgs, wait till we have a warp drive, and explore the universe! :-D
Or maybe I will stay on Earth and watch Discovery Channel.
Thursday, October 25, 2007
สัมภาษณ์ท่านผู้หญิงพูนศุข พนมยงค์
ท่านผู้ หญิงพูนศุข : ช่วงนั้น หน้าสิ่วหน้าขวานมากที่สุดเชียว ทำเนียบท่าช้างเป็น ที่บัญชาการของเสรีไทยที่มีนายปรีดีเป็น หัวหน้า พออยู่ มาวันหนึ่ง นายพลโตโจ นายกรัฐมนตรีญี่ปุ่นก็มาเซ็นชื่อเยี่ยมที่ทำเนียบของนายปรีดี ผู้ สำเร็จราชการฯ แล้ว ก็เดินเข้า มาที่ศาลาริมน้ำ ซึ่งเป็นส่วน ที่พวกเสรีไทยใช้เป็น ที่ทำงาน โตโจคงอยากเห็นส่วน ที่เราอยู่ หมด น่ากลัวเหมือนกัน แต่โชคดีที่พวกญี่ปุ่นคงไม่ ระแคะระคาย ส่วน ฉันตอนนั้น ก็ช่วย ทำทุกอย่าง ช่วย นายปรีดีฟังข่าวติดตามสถานการณ์ต่างประเทศจาก วิทยุ อันที่จริงตอนนั้น ทางการห้ามฟังวิทยุสัมพันธมิตร ต้อง มีใบอนุญาตถึง ฟังได้...
คนไทยไม่ค่อยสนใจประวัติศาสตร์ เลยไม่ค่อยเรียนรู้บทเรียนจากอดีต ประวัติศาสตร์ที่สอนในโรงเรียนก็ไม่ค่อยเข้าท่า เป็น propaganda ก็เยอะ
Tuesday, October 23, 2007
Sunday, October 21, 2007
Oxygen Was Toxic To Life
The most readable account of this event can be found here. Around 2.4-2.5 billion years ago, global cooling almost turned Earth into an ice ball, destroying all life then.
Luckily, the Earth didn't turn into an ice ball, and some organisms adapted to use oxygen in energy production. In fact, every animal and plants descends from single cell ancestors that captured those oxygen-adapted organisms. Right now, all our cells (except sperm cells) contain those organisms in the form of mitochondria. We inherit mitochondria from our mother, not from our father.
Friday, October 19, 2007
I Also Am A Fortune Teller (หมอดูฟันธง)*
Well, he should anyway.
Now before you doubt my ability as a fortune teller, my Nobel prediction is currently 100% correct! In the late 1980's/early 1990's, I told my friends that Ahmed Zewail would surely win a Nobel prize in the future after listening to his talk about femtochemistry.
Well, one data point is probably a fluke anyway.
If you have not read "The Evolution of Cooperation", you should really take a look.
--- - ---- - ----- ---------
*Of course, fortune tellers seem to know the future by doing these:
1. Predict dramatic things.
2. Predict often.
3. Ignore wrong predictions.
4. Focus exclusively on correct predictions.
5. Master cold reading.
The correct question we should ask ourselves is "Does the fortune teller performs better than chance?" not "Does the fortune teller predicts anything correctly?" I'm quite sure that all fortune tellers are fraud. However, if any of them is real, there are many Nobel prizes awaiting those who can deduce the nature of time from those real fortune teller's performance.
Thursday, October 18, 2007
T3 (AKA Tanya Saipetch) Has Arrived
--- - ---- - ------ ---------
2. Exciting 4-D Ultrasounds can be found here.
Tuesday, October 16, 2007
ท่านปัญญา
“ขอให้ธรรมะจงล้างความสกปรกคือความเห็นผิดและการกระทำผิดๆ ของชาวพุทธให้หายไป จงพ้นจากความเขลา ความหลง จงหันมานับถือพระพุทธ พระธรรม พระสงฆ์ โดยประการเดียว การสั่นเซียมซี รดน้ำมนต์ เสี่ยงทาย ด้วยวิธีการต่างๆ จงหายไปจากแผ่นดินไทย
ขอให้อาจารย์เสกพระเครื่องทั้งหลาย จงได้เสกคนให้เป็นคนดีที่มีพระในใจ มิใช่มีพระห้อยคอแต่เมาเช้าถึงเย็น ขอให้พวกมิจฉาชีพทั้งหลาย จงกลับกลายเป็นคนดี มีความเห็นชอบตามทำนองคลองธรรม นี่เป็นพรของข้าพเจ้า มอบให้แก่ท่านทั้งหลายตามทัศนะของพระพุทธศาสนาที่บริสุทธิ์ ไม่มีสิ่งโสโครกสกปรกใดๆ เจือปน ขอให้ท่านทั้งหลายจงรับพรนี้ไปปฏิบัติตามทางของพระพุทธองค์เถิด”
หลวงพ่อฯ สอนไม่ให้งมงาย “ยกตัวอย่างว่าคนถือพระภูมิ เวลาตกอกตกใจ ต้องไปไหว้ทุกที ทีนี้ก็ไปไหว้อยู่บ่อยๆ แล้วทำอะไรมันได้ผล พอได้ผลขึ้นก็ดูหมิ่นตัวเองด้วยซ้ำไป ไม่เอาความสามารถตัวเองมาใช้ กลับไปบอกว่านี่แหละ เพราะพระภูมิช่วยจึงได้สำเร็จ คราวนี้นี่แหละเขาเรียกว่า ดูหมิ่นตัวเองอย่างเหลือเกิน ตัวเองนี่เป็นมนุษย์ผู้ประเสริฐสุดมีจิตมีปัญญากลับไม่ยกย่อง ไปยกย่องศาลเล็กๆ ข้างบ้านดีกว่าตัวไปเสียแล้ว...”
Monday, October 15, 2007
SaiJai.net ได้รางวัลรองชนะเลิศที่งาน Thailand ICT Awards 2007
Thursday, October 04, 2007
A Few Useful Computer Tools
If you do many things repetitively on your computer, you might want to save time by assigning those tasks to hotkeys. The best hotkey program on Windows I know is AutoHotkey. I estimate that it save me about 30 minutes per day for the past year already.
Wednesday, October 03, 2007
Better Understanding VS. Stupid GPA
In this excellent essay, Theodore Gray and Jerry Glynn pointed out why automating mathematical manipulations using tools such as Mathematica would allow civilization to go forward. The lists of things that become less important and more important with such tools are instructive:
Less Important
- Guessing factors for polynomials
- Knowing many tricks for integration
- Being careful when copying over expressions many times
- Finding roots of complex equations
- Knowing how to do matrix row operations
- Knowing how to avoid dropping minus signs
- Memorizing specific rules for derivatives of such functions as tangent and secant
- Memorizing multiple angle formulas for trig functions
More Important
- Translating statements about problems in natural language into statements in mathematical or procedural language
- Learning how to experiment with math
- Knowing which integrals should best be done numerically
- Knowing how to work backwards or to use numerical methods to check symbolic results for plausibility
- Knowing how to use techniques from programming
- Understanding recursion and how to use it practically
- Knowing which functions are discontinuous and where they are discontinuous
- Knowing how to mix math and programming
Another important passage is:
Children need to know certain facts, but acquiring them is not the main point of learning, especially not in the earlier grades. Mainly children need to have effective habits of mind and an ability to think analytically. They also need to be self-motivated, because in real life there isn't always someone there to provide external motivation (unless they join the army).
The hardest things to teach are the skill of solving problems with incomplete information, the skill of figuring out which problems need solving in the first place, and the skill of finding and bringing together the resources needed to solve a problem.
Children are primed to want to learn. They start out valuing learning and accomplishment above anything else in the world. If you see a child uninterested in learning, it is overwhelmingly likely that the child was made that way by something in the child's world: Children do not start out that way. (Of course there are always exceptions, but they are just that: exceptions.)
--- - ---- - ----- ---------
P.S.
1. แนะนำการใช้ Mathematica ภาษาไทย
2. ถามตอบการใช้ Mathematica
3. Understanding the birthday paradox and hash collision using Mathematica
Monday, October 01, 2007
การฝังชิปให้สุนัขอาจจะทำให้สุนัขป่วยเป็นมะเร็งได้
ผมว่าแก้ปัญหาไม่ตรงจุด นอกจากนี้ยังมี study ว่าการฝัง microchip อาจก่อให้เกิดมะเร็งในสัตว์ด้วยเช่น นี่ นี่ และ นี่
แม้ว่าผมจะไม่ได้รักสัตว์เท่าไรนัก แต่คนหลายๆคนเขารักเหมือนลูก เหมือนญาติ ถ้าเขารู้ว่ามันอาจมีความเสี่ยงถีง 4-5% ว่าสุนัขของเขาจะเป็นมะเร็งตรงที่ฝัง microchip เขาจะทำไหม คนทำจะกล้าฝังให้พี่น้องหรือลูกของเขาไหม
ผมไม่แน่ใจว่าการทำอย่างนี้จะแก้ปัญหาอะไร ถ้ามีสุนัขอยู่เกือบล้านตัว แต่มี microchip ให้ 50,000 อัน จะบังคับให้เราซื้อหรือ
แล้วถ้าสุนัขเราเป็นมะเร็งตรงที่ฝัง หรือchipหาย ใครจะรับผิดชอบ
Sunday, September 30, 2007
Good Article, Bad Example
I wrote my voluminous impression of the coup in the past. After a year, I have to say that I'm quite disappointed with the result. There are so many things that could have been done by the people who seized power to prepare Thailand for a stable democracy. Instead, it's quite likely that Thailand will go into more vicious cycles of failed democracy after this coming election since many of the same politicians who bought votes will likely be in the parliament again.
BTW, you can see Naomi Wolf in talking about her book in this video clip.
If You Have To Die, Try To Die In Chilled Liquid
There is another related news article about reviving the dead here.
Here is an excerpt from the first news article:
61-year-old Bill Bondar is living proof that people can be brought back from the dead.
"I didn't know I died, I didn't feel anything, I still don't believe it," Bill said.
"I looked at his face, and I was looking at a dead man," Bill's wife Monica said.
It happened just after the couple left a jam session. Bill collapsed outside their home, lifeless.
"That was the most frightening thing I ever saw in my life and I knew my husband was gone. He was gone," said Monica.
Paramedics were able to restart his heart, but that's just part of the battle. Cells continue to die, and there can be damage to vital organs like the brain, that could be fatal.
Saturday, September 15, 2007
Friday, September 14, 2007
Bizarre Experiments
I especially like #2, #7, #12, #16, #17, and #19.
Wednesday, September 12, 2007
The World Really Needs Peaceful Muslims' Help
“We will have to repent in this generation not merely for the hateful words and actions of the bad people but for the appalling silence of the good people.” – Martin Luther King Jr.
Tuesday, September 11, 2007
Top Censored Stories
It's good to hear news that didn't make it to the mainstream. It sharpens my conspiracy theory instinct and it is true quite often :-)
In Thailand, it seems that most mainstream news outlets exist only to make money and keep the population numb enough for the Pyramid of Capitalist System. We should have a list for Thailand too.
Monday, September 10, 2007
A Few Useful Tips Forwarded To Me
Many uses of tennis balls,
Solar cooling and heating of your home,
How to make your own biodiesel, and
HOW TO BECOME INVISIBLE (for only $24.95, with free bonus books: SECRETS OF SEXUAL SEDUCTION and THE WIZARD'S BOOK OF ANIMAL SECRETS!!!)
If you buy the last one, please tell me how the it works. We can share a Nobel Prize, or two :-)
Saturday, September 08, 2007
Superstition Is Not Limited To Human!
Full paper is here.
I think the result might be applicable to why human perform rituals, pray, bribe karma wheel, buy lotteries, etc. I also wonder whether animals have their religious thoughts too.
I like to collect these animal examples because, based on what we learn from animal and human behaviors, I believe that biology created human morals and religions through evolution of societal units and it's up to the us, not supernatural mechanisms, to make sure that bad deeds got punished and good deeds got rewarded. I don't believe that human require special treatment from nature in terms of mechanisms that shaped us.
A few books that shaped my thinking about this matter:
- Chimpanzee Politics: Power and Sex among Apes
- Peacemaking among Primates
- Sociobiology: The New Synthesis, Twenty-fifth Anniversary Edition
- Moral Minds: How Nature Designed Our Universal Sense of Right and Wrong
- Journey to the Ants: A Story of Scientific Exploration
- The Evolution of Cooperation
Thursday, August 30, 2007
Lastest Batch Of Pictures From Aor
Thursday, August 23, 2007
มีหนังสือมาแนะนำครับ
Sunday, August 12, 2007
Sometimes Experts Don't Know Much
According to another study at Cornell, you can implant false memories into preschool children to make them think the memories are true, and experts cannot distinguish, by interviewing the children, which memories are true and which are false.
So, when experts' claims conflict with reality, you should be careful in checking whether the claims are true or not. Most people (yes, including me) appear (or pretend) to know more than they actually know.
--- - ---- - ----- ---------
P.S. How to believe anything? That's a hard question that cannot be completely solved. I think we can only hope to converge closer and closer to the truth. Gotama Buddha tried to teach the Kalamas people using the list we know as Kalama Sutra. Personally, I like the Bayesian approach of updating my belief on whether something is true or false as I gain more and more evidences. A short overview of Bayesian inference is here. A reading list can be found here.
Sunday, August 05, 2007
A Surprisingly Honest Interview
More info about Pan Yue can be found on Wikipedia. Here is another article by him in English in July 2007.
It will be good for everyone on this earth when policy makers are smart enough to ponder the true cost of development and have enough inner strength to do the right things. Measuring GDP without the cost to environment is simply incorrect, and we will ultimately pay the price.
Wednesday, August 01, 2007
Tatia's Underwater Demolition Training Commenced
Tuesday, July 31, 2007
Danica McKellar Is My Hero
Monday, July 30, 2007
แนะนำให้อ่านครับ
Thursday, July 26, 2007
Autistic People Cannot Lie (Easily)
From the essay:
"And then there are people with autism. Their neurological condition leads not only to difficulties socializing and chatting but also to difficulties recognizing when someone might be deceiving them or understanding how to deceive others. Many children with autism are perplexed by why someone would even want to deceive others, or why someone would think about fiction or pretense. They have no difficulty with facts (version 1 of reality) and can tell you easily if something is true or false (“Is the moon made of rocks? Yes! Is the moon made of cheese? No!”). But they may be puzzled by version 2 of reality, that “John believes the moon is made of cheese.” Why would a person believe something that is untrue?"
By the way, the inventor of BitTorrent, Bram Cohen also has Asperger's syndrome.
Sunday, July 15, 2007
Interesting Point/Counterpoint: Did Islamic Civilization Propelled The World Through The Dark Age?
The argument against: What Arab Civilization?
My favorite word derived from Arabic is "algorithm" which, according to Wiktionary, comes ... from Medieval Latin algorismus, a mangled transliteration of the name of the Islamic mathematician al-Khwārizmī (Arabic: الخوارزمي, "native of Khwarezm.")
Examples for English words derived from Arabic can be found here. Admiral, adobe, alchemy, alcohol, algebra, etc. are among them.
Thursday, July 05, 2007
Understanding Something Is More Than Just Knowing Fancy Words
For example, there was a book that started out with four pictures: first there was a windup toy; then there was an automobile; then there was a boy riding a bicycle; then there was something else. And underneath each picture it said, "What makes it go?"
I thought, "I know what it is: They're going to talk about mechanics, how the springs work inside the toy; about chemistry, how the engine of the automobile works; and biology, about how the muscles work."
It was the kind of thing my father would have talked about: "What makes it go? Everything goes because the sun is shining." And then we would have fun discussing it:
"No, the toy goes because the spring is wound up," I would say. "How did the spring get wound up?" he would ask.
"I wound it up."
"And how did you get moving?"
"From eating."
"And food grows only because the sun is shining. So it's because the sun is shining that all these things are moving." That would get the concept across that motion is simply the transformation of the sun's power.
I turned the page. The answer was, for the wind-up toy, "Energy makes it go." And for the boy on the bicycle, "Energy makes it go." For everything, "Energy makes it go."
Now that doesn't mean anything. Suppose it's "Wakalixes." That's the general principle: "Wakalixes makes it go." There's no knowledge coming in. The child doesn't learn anything; it's just a word!
What they should have done is to look at the wind-up toy, see that there are springs inside, learn about springs, learn about wheels, and never mind "energy." Later on, when the children know something about how the toy actually works, they can discuss the more general principles of energy.
So, when you try to understand how something works or comes to be, and some authority say to you it's because of X, you better know how X operates.
If you haven't read a book called "Surely You're Joking, Mr. Feynman", you should really read it at least once in your life. It contains a lot of fun adventures by the great scientist Richard Feynman.
Tuesday, July 03, 2007
T3 Is Near Completion
Monday, June 25, 2007
ความสามารถของธีธัช
ค้างคาวเอ๋ย
เจ้านอนท่าไหน
นอนห้อยหัว
แสดงว่าถูก
และ
ยีราฟเอ๋ย
ทำไมไม่กินเนื้อ
แต่สิงโตกินเนื้อ
สัตว์อื่นๆ
นอกจากนี้หลังจากธีธัชดูหนังตัวอย่าง Transformers ไปหนึ่งรอบ เมื่อเห็นรูป(นางเอกหนัง Transformers)นี้ในหนังสือ Movie Time:
ก็เรียกผมให้ดูว่าเป็นหนังหุ่นยนต์
เข้าใจจำนะลูก
Tuesday, June 19, 2007
Pound = lb. and Ounce = oz. Why?
"Lb." stands for libra, the basic unit of Roman weight, from which our present-day pound derives. The libra weighed a little under 12 ounces avoirdupois.
"Oz." stands for the Italian onza, ounce. It came into use in the 15th century. Ounce comes from the Latin uncia, a 12th, which is also the source of the term "inch."
Of course, in the end, it does not explain why pound comes from pondo while lb. comes from libra. I guess random accident of human decisions got stuck with us again.
I have read the Straight Dope in physical book format since 1987 and found it very interesting. You might want to visit the website.
Sunday, June 17, 2007
A Debate About Life After Death
Deepak Chopra is very likely one of the greatest (and very rich) living charlatan of our time. He is a real medical doctor, by the way.
They had a debate about Life after Death. You should be able to guess which side I am on.
A moral of the story is: Even if a person is a real medical doctor, it does not mean that he is not a bullshitter and we should always question authority.
If there is life after death, there is no evidence for it. Given what we have observed in the world, I don't think it's likely there is such a thing. It's not depressing to me that after I die, I would feel exactly like before I was born and that I should live the best/most useful life I can during the short time I have. Many people I talked to don't feel the same way and prefer that there is an afterlife.
Friday, June 08, 2007
Skepticality Podcast
Everytime I visited the USA, I would always buy the current issues of Skeptic magazine. The magazine is the official publication of the Skeptics Society, a scientific and educational organization of scholars, scientists, historians, magicians, professors and teachers, and anyone curious about controversial ideas, extraordinary claims, revolutionary ideas, and the promotion of science.
I was looking for something interesting to listen to on my computer and mp3 player, and I found out about Skepticality, which is the official podcast of Skeptic magazine. I was very happy to see the podcast archive that should feed me for a year.
There are two things that currently annoy me greatly and make me think that skepticism should be more widely practiced in Thailand:
1. The "Jatukam Ramathep" hype in Thailand.
2. Books such as "ไอนสไตน์ถาม พระพุทธเจ้าตอบ" which short-change the intricacy and beauty of science in the public's mind by confusing various religious claims with scientific ideas.
In the first annoyance, I am quite pissed that people who claim to be Buddhists blatantly ignore Gautama Buddha's teaching and give in to superstition and worship to attain their well-being. It's as if Buddha never existed and never taught us what he discovered.
For the second annoyance, I usually found gross inaccuracies about what we know about the world through scientific investigation in this type of books. Given the authors' sloppiness about being well-informed and accurate about science, I think it's prudent to assume that they are similarly sloppy about their religion too. The uninformed readers would be fooled by the authors' eloquence and misunderstand our universe in the end. A mind poison, indeed.
Of course, the two annoyances are just the latest fads that reflect our society's preference, and I think the more people consciously become a skeptic, the more we can dispel ignorance and superstition from our society. I firmly believe that democracy critically depends on a large number of informed citizens that can make logical decisions. Sadly such a prerequisite seems to be absent from Thailand.
Anyway, I would like to end on a more positive note and would like to introduce you to a very entertaining video of Michael Shermer giving a talk titled "Why people believe strange things." If your Internet connection is not fast, you would probably want to download the file and play it later.
Thursday, June 07, 2007
M81
High resolution pictures and more info about M81 can be found here.
If you are not sure what a galaxy is, you should really check this Wikipedia article.
Billions and billions (and billions...) of galaxies, each with billions and billions (and billions...) of stars. Our Sun is just one of these stars. All life on Earth's surface derive their energy input from the Sun.
By the way, M81 is considered quite close to us at about 12 million light-years away. Now, to put that distance in perspective, it took light 12 million years to travel from M81 to Earth. Meanwhile, the speed of light is so great (to us) that light can travel around the Earth 7 times in one second. (Light travels about 300,000 kilometers per second, or about a billion kilometers per hour.)We live in a really big universe.