Things that I find interesting, mostly about nature, science, mathematics, programming, and Thailand's fight against corruption.
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
ขออวดผลงานชาวใส่ใจหน่อยนะครับThursday, 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.)
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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
Once again, my wife Aor has posted many of our family pictures on Tabblo (a very easy to use picture sharing and printing website.)Thursday, August 23, 2007
มีหนังสือมาแนะนำครับ
หนังสือ "X-Ray คนไทย 360 องศา" ครับ เขียนโดยคุณ พงษ์ ผาวิจิตรSunday, 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.
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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
I remember Danica McKellar playing the part of Winnie Cooper in the TV show The Wonder Years in the late 1980s to early 1990s. She has a new book out called Math Doesn't Suck to promote mathematics to young people.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:
ก็เรียกผมให้ดูว่าเป็นหนังหุ่นยนต์เข้าใจจำนะลูก
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
Here is a beautiful description of what the M81 galaxy meant to an astronomer when he looked at it.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.
Monday, June 04, 2007
ความสุขใจเล็กๆน้อยๆ
http://oatato.exteen.com/20070511/entry
และ
http://pourboire.spaces.live.com/blog/cns!E380E0F17AF2445!7285.entry
ถ้าใครรู้จักคนอื่นๆที่ชอบ SaiJai.net อย่าลืมบอกกันนะครับ หรือถ้ามีคำแนะนำติชมให้ปรับปรุงอะไรก็ช่วยบอกด้วยครับ
SaiJai.net: ดูแลการใช้คอมของลูก แม้คุณจะนั่งอยู่ที่ทำงาน :-)
Design For The Other 90%
Wednesday, May 30, 2007
กฏแห่งกรรม* มีจริง แต่เกิดจากคน ไม่ใช่ปาฏิหาริย์

ถ้าปล่อยไปตามยถากรรม รอให้คนชั่วตายไปก่อนได้รับโทษ กฏแห่งกรรมก็จะไม่ทำงาน
hakia Search Engine
So, if you search for information a lot, you might find this useful. You can see the examples above the search box for more ideas.
Wednesday, May 23, 2007
Cellulose-Based Personal Armor System From AAI (Aor Armory International)
Tuesday, May 22, 2007
Titus the Artist & Tatia the Bully
Thursday, May 17, 2007
Evidences For Life's Common Ancestors & The Tree Of Life
A good friend of mine asked me what evidences I have for my belief in the idea that all living things on earth have common ancestors. This is an excellent question since it's very important to base our judgement about reality on good evidences, or we can easily be led astray by our commonsense, biases, and other extremely appealing ideas that don't match reality.*My specific belief is this: All living things on Earth descend from one or small number of groups of ancestors. (I would like to say one group, but I'm open to the possibility that there are unknown life forms that have independent ancestors, distinct from our group.)
For this particular belief, a very good summary of evidences can be be found here (29+ Evidences for Macroevolution: The Scientific Case for Common Descent.)
Also, a very informative depiction of known life on Earth can be found at the Tree of Life Web Project. Make sure that you read this page about the interpretation of the image.
An implication of the belief is that I am a (mostly distant) relative of bacteria, mushrooms, blue-green algae, jasmine rice, earth worms, monitor lizards, cows, starfish, mangoes, octopuses, fire ants, bees, dogs, monkeys, gorillas, parrots, sharks, triceratops, T-Rexes, the slaves that built the pyramids, Ghenghis Khan, and you, the reader.
Another implication that if there are extra-terrestrial beings (which I really hope there are, although I don't have any evidence for that yet) it's very unlikely for them to look very similar to us. Even if we and ET have the same common ancestors, that ancestors must have come to earth billions of years ago and will have enough time to evolve into us and myriads forms of animals and plants. Similarly, the ET would descend from the common ancestors over the similarly long time period. So, Captain Kirk in Star Trek should not be able to mate with those ET chicks if he is not really, really into inter-planetary bestiality. (Same reasoning applies to Superman and Lois Lane.**)
Yet another implication is that human is not the apex of evolution. There will be other lifeforms in the billions of years ahead if we don't destroy all life first. We are the first Earth lifeform that can destroy all life on Earth using our technology, but we are not necessarily the best lifeform. To think that we are the peak of all possible lifeforms is just extremely arrogant.
Finally, my body is made of atoms from things (living/dead, never-alive) from the past. Therefore, I also believe that when I die, some atoms that used to be me will be recycled into other living things in the future but the atoms won't carry any of my memory there, since my memory is not stored in specific atoms, but in the patterns of how atoms are arranged. This is supported by the fact that, atoms inside my bodies are very likely to have been in bodies of people of the past, yet I don't share their memory. Conversely, with very high probability, atoms that are in my body now weren't the same atoms that were in my body when I was a child, yet I still remember many things from my childhood. This gives me a hope that, in principle, human can preserve identity/memory by capturing the memory patterns and upload them to more permanent substrate and become relatively immortal.
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* The great Richard Feynman summed it up (in this book) thus: "... there are many reasons why you might not understand [an explanation of a scientific theory] ... Finally, there is this possibility: after I tell you something, you just can't believe it. You can't accept it. You don't like it. A little screen comes down and you don't listen anymore. I'm going to describe to you how Nature is - and if you don't like it, that's going to get in the way of your understanding it. It's a problem that [scientists] have learned to deal with: They've learned to realize that whether they like a theory or they don't like a theory is not the essential question. Rather, it is whether or not the theory gives predictions that agree with experiment. It is not a question of whether a theory is philosophically delightful, or easy to understand, or perfectly reasonable from the point of view of common sense. [A scientific theory] describes Nature as absurd from the point of view of common sense. And it agrees fully with experiment. So I hope you can accept Nature as She is - absurd.
I'm going to have fun telling you about this absurdity, because I find it delightful. Please don't turn yourself off because you can't believe Nature is so strange. Just hear me all out, and I hope you'll be as delighted as I am when we're through."
**Larry Niven wrote a very funny essay called "Man of Steel,Woman of Kleenex" on the problems involved when Superman and Lois Lane try to mate.
Two Ways To Combat Ignorance Promulgated By Religious Fundamentalists
Lately, religious fundamentalists of all types are trying to force schools in many countries to either stop teaching evolution as an explanation of how life and species were formed, or to spend equal time teaching nonsense that is amply contradicted by evidences.Here are two ways to combat such vile attempts:
1. A rational way: Explain the frequently misunderstood aspects of evolution, and,
2. A sublime way: Convert the infidels to the Church of the Flying Spaghetti Monster.
If you are interested in evolution, you can start here.
The book that changed my view of how the world came to be is The Blind Watchmaker, by Richard Dawkins. I read it when I was 19 and I'm so glad I did. Dawkins wrote in the book: "I want to persuade the reader, not just that the Darwinian world-view happens to be true, but that it is the only known theory that could, in principle, solve the mystery of our existence."
Tuesday, May 15, 2007
รำลึกถึงคนดี
ถ้ามีโอกาส ลองเข้าไปดูเว็บสถาบันปรีดี พนมยงค์ นะครับ ลองดูความคิดเรื่องคอคอดกระเมื่อปี 2501 แล้วจะตกใจว่าราคากี่บาท
Friday, May 11, 2007
Tuesday, May 08, 2007
Nuclear (Fission) Power To The Rescue?
I'm brushing up my rusty nuclear physics knowledge to see if it's plausible.
The abstract reads:
"Nuclear fission energy is as inexhaustible as those energies usually termed "renewable", such as hydro, wind, solar, and biomass. But, unlike the sum of these energies, nuclear fission energy has sufficient capacity to replace fossil fuels as they become scarce. Replacement of the current thermal variety of nuclear fission reactors with nuclear fission fast reactors, which are 100 times more fuel efficient, can dramatically extend nuclear fuel reserves. The contribution of uranium price to the cost of electricity generated by fast reactors, even if its price were the same as that of gold at US$14,000/kg, would be US$0.003/kWh of electricity generated. At that price, economically viable uranium reserves would be, for all practical purposes, inexhaustible. Uranium could power the world as far into the future as we are today from the dawn of civilization—more than 10,000 years ago. Fast reactors have distinct advantages in siting of plants, product transport and management of waste."
I have a bias in that I really want solar (thermal and electric) energy to succeed because Thailand has plenty of sun light. Also, we would be using the Sun as our nuclear (fusion) reactor situated 150,000,000 km away instead of a nuclear (fission) reactor a few tens to hundreds km away. However, if this fast reactor approach is feasible and safe enough, it deserves serious consideration for future energy production.
Saturday, May 05, 2007
บทความแนะนำเรื่องการใส่พุทธศาสนาไว้ในรัฐธรรมนูญ
ข้อความน่าสนใจ:
"ถ้า พูดตรงไปตรงมา เราไม่ มีศาสนาพุทธเป็น ศาสนาประจำใจ ดูจาก อาชญากรรม ดูจาก ปัญหาคอร์รัปชัน ความ รุนแรงใน ครอบครัว การพึ่งพิงสิ่งศักดิ์สิทธิ์งมงาย ถ้า บัญญัติใน รัฐธรรมนูญจะ ทำให้ เรามองปัญหาผิดเป้า คือไปเรียกร้องแต่รัฐบาล เมื่อบัญญัติใน รัฐธรรมนูญแล้ว กฎหมายออกมาอย่างโน้นอย่างนี้ แต่ประชาชนยังไม่ได้ ทำอะไรเลย แค่เรื่องทำให้ วัดปลอดเหล้า รัฐบาลจะ ทำอะไรได้ ไหม ใน เรื่องนี้ อาตมาคิดว่าทำได้ น้อย เรื่องนี้เป็น เรื่องปกติมาก ที่วัดจะ มีการกินเหล้ากันใน เทศกาลผ้าป่า กฐิน งานวัด งานศพ ถามว่า รัฐ ตำรวจ จะ ทำอะไรใน เรื่องนี้ได้ ไหม ไม่ได้ นะ คนที่จะ ทำได้ คือพระและ ชุมชน แต่ตอนนี้ชุมชนอ่อนแอ พระก็ไม่ มีกำลัง"
"คือเรากลัวแต่ศาสนาอื่น แต่เราไม่ ตระหนักเลยว่า เราซึมซับวัตถุนิยม บริโภคนิยมมา แล้ว เวลานี้บริโภคนิยมเผยแพร่ไปทั่ว ปัญหาที่เป็น สิ่งคุกคามพุทธศาสนาไม่ใช่ ศาสนาอื่น แต่เป็น วัตถุนิยม ศาสนาจตุคามรามเทพ หรือ ว่าสิ่งศักดิ์สิทธิ์สะท้อนความ อยากจะ รวย อยากจะ มั่งมีมากๆ มีกูไว้ไม่ จน นี่คือคำขวัญของจตุคามรามเทพ"
"คนไทยอยากรวย และ นี่คือความไม่ พอเพียง นี่คือสิ่งที่ทำลายพรหมจรรย์ของพระสงฆ์ นี่คือสิ่งที่ทำลายคุณธรรมของคนไทย เรามีคอร์รัปชัน มีการฆ่ากัน ปล้นจี้กัน นี่คือบริโภคนิยม วัตถุนิยม ถามว่า ตรงนี้เราเห็นเป็น ปัญหาหรือ เปล่า ตรงนี้ไม่ใช่ ใครทำนะ เราทำกัน เอง ตรงนี้รัฐบาลช่วยได้ น้อย"
"ตอนนี้เรากำลังหวังทางลัด เหมือนคนที่อยากจะ รวย แต่ไม่ ทำงาน ได้ จตุคามรามเทพมาดีแค่ไหน ก็ไม่ มีทางรวยได้ อย่างแท้จริง คนที่เป็น ห่วงพระพุทธศาสนา ก็อยากได้ ทางลัด ยืมมือรัฐเข้า มาจัดการ แต่อาตมาคิดว่าไม่ได้ แก้ปัญหา เพราะ ว่าชาวพุทธเราตั้งแต่คณะสงฆ์ลงมา ปล่อยปละละเลยไม่ สนใจ เพราะ ฉะนั้น ถ้า เราไม่ ทำตรงนี้ แม้รัฐจะ ปรารถนาดีอย่างไร ก็ทำไม่ได้"
"อาตมาคิดว่า แทนที่จะ หันไปมองรัฐว่ารัฐควรจะ ทำอะไรบ้าง ควรถามตัวเองว่า เราชาวพุทธจะ ทำอะไรได้ บ้าง เป็น ไปได้ ไหม วัดที่มีเงินเยอะๆ หลายพันล้าน หมื่นล้าน จะ เผื่อแผ่ไปยัง วัดที่ยากจน ให้เขา มีการอบรมพระเณรให้ ดีขึ้น เมืองไทยเวลานี้ไม่ได้ ขาดเงิน ใน วงการคณะสงฆ์ไม่ได้ ขาดเงิน ไม่ จำเป็นต้องได้ เงินจาก รัฐแม้แต่สตางค์แดงเดียวก็ได้ เพราะ ว่าเงินทำบุญ เงินที่ได้จาก ญาติโยม มากมายมหาศาล"
"แต่เราไม่ แบ่งกัน เราไม่ได้ใช้ใน ทางที่ถูกต้อง คือเราไปสร้างวัตถุ แต่เราไม่ สร้างพระเณร เราไม่ใช้ใน การอบรมการศึกษาเยาวชน แล้ว พอมีปัญหา เราก็บอกว่า รัฐบาลช่วย หน่อย รัฐบาลต้อง เข้มแข็งกว่านี้ อาตมาคิดว่าตรงนี้เป็น การมองแบบไม่ ตรงจุด"
Wednesday, May 02, 2007
One More Step Toward My Cyborg Future!
This IBM's report indicates that their scientists used the 4096-processor BlueGene/L supercomputer to simulate 8 million neurons of mouse brain with 6,300 synapses per neuron at 1/10 the real-time speed.Human brain has about 100,000 million neurons, so there is a factor of 12,500 in the number of neurons to go, and a factor of 10 for the simulation speed. Let's say we need 1,000,000 times more computing power to simulate the human brain in real time, that will take only 20 doublings in processing power to achieve. Therefore, a supercomputer in 20-30 years might be able to simulate a human brain!
Further understanding of how the states of the brain are stored in neuron configurations, and how to read the state of a living human and upload the state to the simulator would be the limiting steps in our ability to backup our brain states.
I think if I can live another 40-50 years, I will be able to upload and backup myself repeatedly to live for a really long time.
Wednesday, April 25, 2007
Why Does Iron Kill Stars? ทำไมเหล็กถึงฆ่าดาวฤกษ์
Watch the video clip here.สรุปภาษาไทย:
ดาวฤกษ์ส่องแสงได้เพราะน้ำหนักของดาวกดให้ธาตุเบาๆ (ไฮโดรเจน ฮีเลียม ... ดูตารางที่นี่) รวมตัวกันเป็นธาตุที่หนักขึ้น
ปฏิกริยาเหล่านี้จะคายพลังงาน (นี่ก็คือ ระเบิดนิวเคลียร์ดีๆนี่เอง) ฉนั้นแรงระเบิดจะทำให้ดาวฤกษ์พองอยู่ได้ไม่ยุบตัวตามน้ำหนักของดาว และส่องแสงสว่างมากอย่างที่เราเห็น
ในตอนเริ่มต้นดาวฤกษ์มีแค่ไฮโดรเจนและฮีเลียม ไม่มีธาตุอื่นๆเลย แต่เมื่อเวลาผ่านไปธาตุที่หนักขึ้นเรื่อยๆก็จะถูกสร้างภายในดาวฤกษ์ด้วยการรวมตัวของธาตุเบาๆ
เราจะได้ธาตุหนักขึ้นเรื่อยๆ แต่จะเริ่มมีปัญหาเมื่อถึงธาตุเหล็ก เพราะการเปลี่ยนจากธาตุเหล็กให้เป็นธาตุที่หนักกว่าจะต้องใช้พลังงาน แทนที่จะคายพลังงาน
ดาวก็ไม่มีแรงระเบิดนิวเคลียร์ที่ทำให้ดาวพองตัวอยู่ได้ แล้วดาวก็จะหดตัวลงอย่างรวดเร็วจากการกดทับของน้ำหนักของตัวเอง
ถ้าดาวหนักมากพอ ความเร็วในการหดจะสูงพอที่จะทำให้เกิดปฎิกริยาอีกแบบที่ทำให้เกิดการระเบิดอย่างรุนแรงทำให้ชิ้นส่วนของดาวกระเด็นไปไกลๆๆๆๆ การระเบิดนี้เรียกว่า Supernova
ถ้าดาวหนักมากเกินขีดหนึ่ง แรงระเบิดอันรุนแรงนั้นก็ยังไม่พอที่จะทำให้ชิ้นส่วนของดาวกระเด็น และดาวนั้นก็จะเป็นหลุมดำ
ข้อสังเกตุที่ผมชอบก็คือ
1. อะตอมทั้งหลายในร่างกายเรา ในต้นไม้ ในสัตว์ ในน้ำ หรือในเกือบทุกอย่างในโลก เคยอยู่ภายในดาวที่ตายไปและระเบิดเป็น supernova มาก่อน (ก่อนอะไร? ก่อนดวงอาทิตย์จะเกิด ดวงอาทิตย์เราค่อนข้างจะมีอายุน้อยที่ประมาณ 5 พันล้านปี จักรวาลน่าจะมีอายุประมาณ 1.3 หมื่นล้านปี (คุณอาจจะสงสัยว่าเรามีวิธีรู้อายุหลายวิธีไหม--คำตอบคือมีครับ))
Sunday, April 15, 2007
The US's High Cost Of Killing (Iraqi Fighters)
I saw this headline: "US Forced to Import Bullets from Israel as Troops Use 250,000 for Every Rebel Killed" and I was trying to have some understanding of the magnitude of this stupendous number.From the news, between 2002 and 2005, the US used 6,000,000,000 bullets in Iraq. This is almost one bullet per each person on earth, since there are about 6,500,000,000 people on Earth.
Assuming the weight of the bullet is 4 grams*, the total weight of bullets is 4 grams per bullet x 6 billion bullets = 24 billion grams, or 24 million kilograms, or 24,000 tons! or 20,000 Toyota Yaris!**
Assuming the bullet is very cheap at 10 cent each, it takes $25,000 or about one million baht to kill one Iraqi fighter. The actual cost is probably at least 2-3 times my estimate.
Now, of course, that was just the cost of bullets. There are other costs such as bombs, planes, tanks, fuels, personnel, food, etc. There is an estimate of the total cost of Iraq Invasion at the National Priorities Project ($400 billions+, or more than 14 million million baht.) Of course, there are various estimates as described here***, but the cost is at least in hundreds of billions of dollars or trillions of dollars.
If it costs this much to invade Iraq to control their oil, wouldn't it be cheaper just to bribe everyone (26 million) in Iraq and buy oil at a fair price? For each $100 billion, each Iraqi will receive approximately $4,000 which is about the per capital GDP ($3,600 in 2005.)
I told you, stupid & evil leaders are very harmful to the world. Lee Iacocca does not think there are any US leaders left in the White House though.
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*Using the data from http://www.onlineconversions.com/weight.php,
http://en.wikipedia.org/wiki/.223_Remington, and
http://en.wikipedia.org/wiki/5.56_mm_NATO, to calculate the weight (and look up the performance) of each bullet.
**For comparisons, a small car like Toyota Yaris is about one ton each. A bigger car like Mercedes Benz E weighs about two tons.
***Just search Google for "cost of iraqi war" to see the various estimates.
Monday, April 09, 2007
Microsoft Is Dead, Or Not
Don Dodge said, "No, Microsoft is not dead."
Paul Graham replied, "Microsoft is dead, metaphorically."

Well, I suppose the "Microsof Is Dead" argument might be simpler to understand if we say that Microsoft is not likely to be relevant to the future innovation related to computing and the Web, but that would not be a good headline for an article, wouldn't it?
On the other hand, Don Dodge said that Microsoft is very strong financially and is in many emerging markets. He is incidentally the Director of Business Development for Microsoft's Emerging Business Team, so if he agrees with Paul Graham, Microsoft would definitely be dead.
As for me, my judgement is clouded by my anger at how mediocre Windows Vista is. My (over)reaction would be Microsoft is no longer relevant to the innovation, and thus I tend to agree with Paul Graham's claim.
I'm also known for being often wrong but never in doubt.
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*Paul Graham is responsible for, among other things, raising awareness of applying Bayesian inference to the problem of email spam in his "A Plan for Spam" essay.