Sunday, May 27, 2012
NASA reform
Wednesday, May 23, 2012
Volunteerism
Emphasis added.
The school-district leadership finds itself caught between the volunteers and the union, seeking to pacify both parents and the CSEA. Meanwhile, important positions lost to budget cuts that volunteers could handle remain unfilled. Deputy Superintendent Steve Bolman is left to quote from the union contract and labor law: "It's not policy, this is law. [Volunteers] can't do work 'usually, ordinarily or regularly done by classified employees.'" For her part, Kruusmagi sounds a little sketchier on the legalities: "I can't cite the exact thing," she says, "but there are state rules. I believe it's in [education] code that volunteers are not allowed at schools."
--
Hahahahaaaa!!! That is ME laughing at YOU, cruel world.
-Jordan Rixon
I could not love thee, dear, so much,
Loved I not Honour more.
Tuesday, May 22, 2012
How to find the best food
At fancy and expensive restaurants (say, $50 and up for a dinner), you can follow a simple procedure to choose the best meal. Look at the menu and ask yourself: Which of these items do I least want to order? Or: Which one sounds the least appetizing? Then order that item.
The logic is simple. At a fancy restaurant, the menu is well thought-out. The kitchen's time and attention are scarce. An item won't be on the menu unless there is a good reason for its presence. If it sounds bad, it probably tastes especially good.
Many popular-sounding items, on the other hand, can be slightly below the menu's average quality. For instance, you should be careful not to get too enthusiastic about roast chicken, especially if you are in a restaurant that, like virtually all restaurants, does not specialize in roast chicken. Roast chicken is an exceedingly familiar dish, and many people will order it to experience the familiar. Consider the incentive this provides the chef. And consider that a few items may be on the menu specifically because they are generally in demand, not because the chef cooks them with special brilliance.
So order the ugly and order the unknown. You'll probably get a better and more interesting meal.
Monday, May 21, 2012
Really fascinating article on statistics
Thursday, May 17, 2012
Quick explanation of Bayesian probability (mondo typo fixes)
There's some simple math involved in proving this next statement, but
That is, the probability of h after given e is the probability that h would produce e, weighted by how probable h already was and by the probability that you would have seen e anyway. Surprising evidence carries much more weight than commonplace evidence.
2a. I find no blood. Since serial killers leak no blood 99% of the time,
I'm still pretty convinced he might be a serial killer. It's going to take many, many nights of lurking outside his garage to convince me otherwise, but if I only find blood about 1/10,000 of the time, eventually I'll decide he's innocent.
2b. I find blood!
Quick explanation of Bayesian probability
There's some simple math involved in proving this next statement, but
That is, the probability of h after given e is the probability that h would produce e, weighted by how probably h already was and by the probability that you would have seen e anyway. Surprising evidence is carries much more evidence than commonplace evidence.
2a. I find no blood. Since serial killers leak no blood 99% of the time,
I'm still pretty convinced he might be a serial killer. It's going to take many, many nights of lurking outside his garage to convince me otherwise, but if I only find blood about 1/10,000 of the time, eventually I'll decide he's innocent.
2b. I find blood!
Tuesday, May 15, 2012
School innovation
Saturday, May 12, 2012
RE: Dimorphism
Friday, May 11, 2012
Prophets, opinion, revelation
Joseph Fielding Smith - It makes no difference what is written or what anyone has said, if what has been said is in conflict with what the Lord has revealed, we can set it aside. My word, and teachings of any other member of the Church, high or low, if they do not square with the revelations, we need not accept them. Let us have this matter clear. We have accepted the four standard works as the measuring yardsticks, or balances, by which we measure every man's doctrine. You cannot accept the books written by the authorities of the Church as standards of doctrine, only in so far as they accord with revealed word in the standard works.
Every man who writes is responsible, not the Church, for what he writes. If Joseph Fielding Smith writes something which is out of harmony with the revelations, then every member of the Church is duty bound to reject it. If he writes that which is in perfect harmony with the revealed word of the Lord, then it should be accepted." (Doctrines of Salvation, v. 3, p.203-204)
Harold B. Lee - If anyone, regardless of his position in the Church, were to advance a doctrine that is not substantiated by the standard Church works, meaning the Bible, the Book of Mormon, the Doctrine and Covenants, and the Pearl of Great Price, you may know that his statement is merely his private opinion. The only one authorized to bring forth any new doctrine is the President of the Church, who, when he does, will declare it as revelation from God, and it will be so accepted by the Council of the Twelve and sustained by the body of the Church. And if any man speaks a doctrine which contradicts what is in the standard Church works, you may know by that same token that it is false and you are not bound to accept it as truth. (The Teachings of Harold B. Lee, p. 544)
Harold B. Lee – We can know when a man speaks as a prophet. Now, when does a person speak as a prophet? Do you recall that oft-repeated revelation in which the Lord said:
And, behold, this is an ensample unto all those who were ordained unto this priesthood [and he is talking of General Authorities], whose mission is appointed unto them to go forth-
They shall speak as they are moved upon by the Holy Ghost.
And whatsoever they shall speak when moved upon by the Holy Ghost shall be scripture, shall be the will of the Lord, shall be the mind of the Lord, shall be the word of the Lord, shall be the voice of the Lord, and the power of God unto salvation. (D&C 68:2-4.)
This is so when a General Authority is speaking by the power of the Holy Ghost.
Someone has rightly said that it is not to be thought that every word spoken by our leaders is inspired. The Prophet Joseph Smith wrote in his personal diary: "This morning I visited with a brother and sister from Michigan, who thought that 'a prophet is always a prophet'; but I told them that a prophet was a prophet only when he was acting as such" (Teachings of the Prophet Joseph Smith, p. 278.)
It is not to be thought that every word spoken by the General Authorities is inspired, or that they are moved upon by the Holy Ghost in everything they write. I don't care what his position is, if he writes something or speaks something that goes beyond anything that you can find in the standard Church works, unless that one be the prophet, seer, and revelator - please note that one exception - you may immediately say, "Well, that is his own idea." And if he says something that contradicts what is found in the standard Church works, you may know by that same token that it is false, regardless of the position of the man who says it. We can know or have the assurance that they are speaking under inspiration if we so live that we can have a witness that what they are speaking is the word of the Lord. There is only one safety, and that is that we shall live to have the witness to know. President Brigham Young said something to the effect that "the greatest fear I have is that the people of this church will accept what we say as the will of the Lord without first praying about it and getting the witness within their own hearts that what we say is the word of the Lord" (see Discourses of Brigham Young, p. 135).
A prophet may not always speak as a prophet. We had a bishop from down in Florida that had a great problem. A third of his total ward membership had been trying to buy a large piece of property, twenty-six thousand acres. They had obligated themselves to a bank and an insurance company and things hadn't gone right, and now the bank and the insurance company were going to foreclose. The property was worth twice as much as they had borrowed, but somebody had to bail them out. So this good bishop called the First Presidency's office and said, "I'd like to come to Salt Lake. I'd like to see if we can do something to save my people." This good bishop, good old Southerner that he was, came with all the papers. He just neglected everything else pertaining to his business, because he wanted to save his people. And so for two hours the First Presidency listened to him, and I sat there and I said, "No, we can't do that. We can't invest the Lord's money in that property. It can't be done. No, I can't see a way out. We'd get into more trouble." I could see all these difficulties, and so he was sent on his way back home. The President of the Church had said no. But before the next morning came, I knew that the President of the Church hadn't been speaking by the Spirit of the Lord. And when I met my counselors the next morning I said, "Where's the bishop?" And they said, "Oh, he's left on an early morning plane back home." And I said, "Well, I've had a complete change. I've done some praying; I've done some thinking. We mustn't let that bishop go down there without sending somebody down to see if we can help him. I don't know whether we can or not, but we can't send him back with just saying, 'No, there's nothing we can do to help you.' We've got to see if there's not some alternatives." We've had some brethren down there this last week trying to see if we can find a way by which part of the land might be purchased for what is all owing on the balance and save them sixteen thousand acres of their property. Now, I don't know what they're coming back with, but I knew that I hadn't spoken by the Spirit of the Lord the night before. But I knew before the next morning what the Lord was trying to say to me.
Now, do you see the difference of what I'm trying to say to you? Sometimes we can speak just as a man. But when we get the Spirit of the Lord we may think differently, and so it's our responsibility when we stand in holy places that we speak by the Spirit of the Lord and make as sure as we possibly can that we're speaking as the Lord directs us to speak.
Prophets may speak their own opinions at times. There have been times when even the President of the Church has not been moved upon by the Holy Ghost. There is, I suppose you'd say, a classic story of Brigham Young in the time when Johnston's army was on the move. The Saints were all inflamed, and President Young had his feelings whetted to fighting pitch. He stood up in the morning session of general conference and preached a sermon vibrant with defiance at the approaching army, declaring an intention to oppose them and drive them back. In the afternoon he rose and said that Brigham Young had been talking in the morning but the Lord was going to talk now. He then delivered an address the tempo of which was the exact opposite of the morning sermon. (The Teachings of Harold B. Lee, p. 540-542)
Mark L. McConkie - Thus it is that prophets are entitled to personal opinions just like any other man (Alma 40:20; 1 Corinthians 7:25), and sometimes have differences among themselves. They even make mistakes (Galatians 2:11). Orson Hyde, for instance, once preached a sermon that contained some false sentiments. Joseph Smith was present, and following the meeting said, "I told Elder Hyde that I was going to offer some corrections to his sermon this morning," and, to Elder Hyde's eternal credit, Elder Hyde replied, "They shall be thankfully received." In the afternoon meeting Joseph spoke and "then corrected Elder Hyde's remarks, the same as I had done to him privately" (Nelson, 1979, p. 215-16). Similarly, we have in our history an account of Brigham Young preaching something in the morning session of a conference and returning in the afternoon session of the same conference and saying "this morning you heard what Brigham Young thinks about this subject, and now I would like to tell you what the Lord thinks about it." He then reversed the position he had taken in the morning session (McConkie, 1966a). (Remembering Joseph, Personal Recollections of Those Who Know the Prophet Joseph Smith, Deseret Book Company, 2003, no pg number available.)
N. Eldon Tanner - I would like to explain to you exactly what took place following the unexpected death of President Harold B. Lee on 26 December 1973. I was in Phoenix, Arizona, to spend Christmas with my daughter and her family, when a call came to me from Arthur Haycock, secretary to President Lee. He said that President Lee was seriously ill, and he thought that I should plan to return home as soon as possible. A half-hour later he called and said: 'The Lord has spoken. President Lee has been called home.'
President Romney, Second Counselor, in my absence was directing the affairs of the Church, and was at the hospital with Spencer W. Kimball, President of the Council of the Twelve. Immediately upon the death of President Lee, President Romney turned to President Kimball and said, 'You are in charge.' Remember, the Prophet Joseph Smith had said that without the President there was no First Presidency over the Twelve.
Not one minute passed between the time President Lee died and the Twelve took over as the presiding authority of the Church.
Following President Lee's funeral, President Kimball called a meeting of all the Apostles for Sunday, December 30, at 3 P.M. in the Salt Lake Temple Council Room. President Romney and I had taken our respective places of seniority in the council, so there were fourteen of us present.
Following a song, and prayer by President Romney, President Kimball, in deep humility, expressed his feelings to us. He said that he had spent Friday in the temple talking to the Lord, and had shed many tears as he prayed for guidance in assuming his new responsibilities and in choosing his counselors.
Dressed in the robes of the holy priesthood, we held a prayer circle; President Kimball asked me to conduct it and Elder Thomas S. Monson to offer the prayer. Following this, President Kimball explained the purpose of the meeting and called on each member of the quorum in order of seniority, starting with Elder Ezra Taft Benson, to express his feelings as to whether the First Presidency should be organized that day or whether we should carry on as the Council of the Twelve. Each said, 'We should organize now,' and many complimentary things were spoken about President Kimball and his work with the Twelve.
Then Elder Ezra Taft Benson nominated Spencer W. Kimball to be the President of the Church. This was seconded by Elder Mark E. Petersen and unanimously approved. President Kimball then nominated N. Eldon Tanner as First Counselor and Marion G. Romney as Second Counselor, each of whom expressed a willingness to accept the position and devote his whole time and energy in serving in that capacity.
They were unanimously approved. Then Elder Mark E. Petersen, second in seniority in the Twelve, nominated Ezra Taft Benson, the senior member of the Twelve, as President of the Quorum of the Twelve. This was unanimously approved.
At this point all the members present laid their hands upon the head of Spencer W. Kimball, and President Ezra Taft Benson was voice in blessing, ordaining, and setting apart Spencer W. Kimball as the twelfth President of The Church of Jesus Christ of Latter-day Saints.
Then, with President Kimball as voice, N. Eldon Tanner was set apart as First Counselor and Marion G. Romney as Second Counselor in the First Presidency of the Church. Following the same procedure, he pronounced the blessing and setting apart of Ezra Taft Benson as President of the Quorum of the Twelve." (Ensign, Nov. 1979, p. 43–44, quoted in TLP, 7-5.)
NOTE: # of counselors in the 1st Presidency – Besides President Kimball having a 3rd counselor, David O McKay had 3 counselors in 1961, 3 again for 1 day in 1965, 4 in 1965-1968 and 5 from 1968-1970.
Joseph Smith had up to 6 counselors at a time. Brigham Young had 3 in 1866-1873, 8 in 1873-1875 and 7 from 1875-1877.
Also, there were several instances where counselors were not ordained apostles.
Thursday, May 10, 2012
Dimorphism
My wife will be my partner and my peer. But a large part of my job is to support the family so she has freedom to pursue her dreams, whether it's having a family or running a research lab. We are friends and equals but we are not interchangeable.
--
Hahahahaaaa!!! That is ME laughing at YOU, cruel world.
-Jordan Rixon
I could not love thee, dear, so much,
Loved I not Honour more.
Sunday, May 6, 2012
Words
I don't believe in the words, "I love you too." That's just a way of changing the subject.
Skepticism of skepticism
Here's an interesting blog post from a statistician, about skepticism on global warming, and confirmation bias on the skeptics' part. Gelman makes a really good point here that you shouldn't make confident assertions about what the other side is doing unless you really are very in touch with their work.
Recently I was disturbed (but, I'm sorry to say, not surprised) to see Seth post the following:
Predictions of climate models versus reality. I [Seth] have only seen careful prediction-vs-reality comparisons made by AGW [anthropogenic global warming] skeptics. Those who believe humans are dangerously warming the planet appear to be silent on this subject.
In response, Phil commented:
Funny, on the day you [Seth] made your post saying that you haven't seen comparisons between models and predictions except by skeptics, thetop entry on RealClimate, the single most prominent global-warming-related blog that is not run by skeptics, was "Evaluating a 1981 temperature projection."
Pretty amazing, huh? On its face it would seem surprising to claim that the majority of leading climate scientists don't do "careful prediction-vs-reality comparisons," and indeed on the very day of Seth's post, there is such a comparison right there on the first place you might look for what the climate scientists are doing!
How did Seth miss it?
[snip]
I think this is important not only for the followers of Seth Roberts but more generally in that it illustrates the traps that people can fall into when seeking out confirmation of their beliefs. Seth is better-equipped than most people to read about scientific evidence, yet he is stuck, not only in holding a scientific view which I find implausible (after all, I might be wrong) but in not understanding that Geert Jan van Oldenborgh, Rein Haarsma, etc etc etc are doing serious science. It's sad, and it's scary.
His point is well-taken. This mistake is one I am sometimes guilty of, because I am really judgmental and quick to generalize from examples without thinking about how I encountered those examples. Be skeptical of your own skepticism. And then be skeptical of that too.
-M.
--
Hahahahaaaa!!! That is ME laughing at YOU, cruel world.
-Jordan Rixon
I could not love thee, dear, so much,
Loved I not Honour more.
Saturday, April 28, 2012
On belief
On the one hand, belief is powerful. By conditioning on assumptions, we can rule out alternatives and move quickly and surely. But belief is risky, especially since all of our beliefs, if stated precisely enough, [are] false. The resolution is that we can use the strength and power of beliefs to better study their limitations.
From a statistical (and philosophy-of-science) perspective, strong assuptions play two roles: First, with strong assumps we can (often) make strong and precise inferences. The likelihood function is a powerful thing. Second, strong assumptions are strongly checkable and falsifiable. We take our models seriously, work with them as if we believe them unquestioningly, then use the leverage from this simulation of belief to check model fit and explore discrepancies between inferences and data.
Wednesday, April 25, 2012
Cultural sensitivity (story)
[Greg Cochran writes] Let me tell you a story. In certain parts of west Africa, boys are expected to start menstruating around age 14. And they do, sort of: you start seeing blood in their urine. When that happens, there's a big ceremony, everyone says 'today you are a man'. Whatever. The thing is, that's about the time they put the boys into the flooded rice fields, where they're exposed to schistosoma haematobium, which causes urinary schistosomiasis. It's bad for you: it can impair growth and cognitive development in children, reduces productivity, and is a potent cause of bladder cancer over the long term.
Our explanation of male menstruation as urinary schistosomiasis must undermine these people's traditional culture. Eliminating schistosomiasis would undermine it even further, just as the rubella vaccine dealt a heavy blow to deaf culture by cutting the number of congenitally deaf children in half. .
Isn't that just too **** bad.
Tuesday, April 24, 2012
Pioneer anomaly solved
Wednesday, December 28, 2011
Reflections on prayer (long)
Can I share with you a couple of experiences from the Army that made me think? In English not Latin this time. :) Both concern communication between heaven and earth.
The first one is about one of my buddies.
Right after we got to Ft. Benning, we spent about 10 days in a reception battalion, basically doing paperwork and getting issued equipment (and eating chow, and standing in lots of lines all day in order to do all these things). This guy, Private Ontiveros, joined the Army in large part to support his girlfriend and their daughter, in particular so his daughter would have access to medical care through the Army system. However, it turns out that because they're not married, he needed to have a paternity test in order for his daughter to be acknowledged as his by the Army. Fortunately for him, he'd had one done previously for some reason (something about a custody struggle at a point when he and his girlfriend's relationship had been on the rocks) and he just needed his girlfriend to fax the info for him. However, he's been waiting for it for a while and it was almost time for us to ship out downrange and start actual training, and he still didn't have the fax reply. He was quite concerned about it, and the night before we had to leave he approached me privately and asked me to pray on his behalf that the fax would come through. (I did so, silently. "Dear Heavenly Father, I know you're aware of this already and you may already be on it, but would you please help Ontiveros get his daughter's paternity results in time? I would really appreciate it. Thank you. In the name of Jesus Christ, amen.") I presume he probably asked the same thing to a few of the other guys who were also Christians. I talked to him the next day, right before we left, and he was really happy. He had been going through the old faxes from the previous week, and a name on one of the faxes happened to catch his eye as being his girlfriend's grandmother's name. It turned out to be the paternity test result fax, and it had actually arrived several days prior, it had just gotten overlooked. Everything turned out okay.
Reflection:
The experience made me think about how what was actually needed to answer Ontiveros' prayer was not to make something *happen* (fax arrive), but to make something *known* (the fax had already arrived), and how that is not that unusual. Many prayers can be answered by inspiration through the Holy Ghost, as I think happened in this case, without doing *anything* with anything made from molecules which a normal person would call a "miracle".
The second experience I want to share is my own.
About a week before HBL (Holiday Block Leave), and the day before we were scheduled to take a PT (Physical Training) test, I got a bad muscle cramp or something in my left calf. I tried stretching it out and drinking water, but the muscle was still knotted up or something several hours later, and in fact it was feeling worse--my tendons felt hyperextended as if I'd been stretching too far for too long and it was getting pretty distracting. I was going to say a quick prayer asking for it to get better quickly, but someone I felt that would be inappropriate. Instead I felt that this was a trial which was supposed to last for a while, and that it would be better to ask for there to be no permanent injury, and for me to endure it well in the meantime. Later that night it was feeling yet worse and I was resting when Private Messmer noticed that my calf was swollen to about twice normal size--so it wasn't just a muscle cramp, there was something going on--which alarmed everyone sufficiently that I had to go to the hospital emergency room to get checked out. (The Army is really concerned with preventing injuries.) Several hours later they had ruled out anything immediately serious, but still didn't know exactly what the problem was. I was issued crutches and told to keep weight off that leg for a few days and to come back for a followup ultrasound on Monday. It is, by the way, extremely annoying to try to function in boot camp while wearing crutches--either you try to carry your own stuff and it's awkward physically, or someone helpfully carries your stuff for you and it's awkward socially. By Tuesday night things hadn't improved noticeably--still couldn't put much weight on the leg without cramping up, still going crazy from residual feelings of hypertension in the tendon--and I was ready to be done with crutches, but the doctors still had no idea what was wrong. After thinking it over, I decided that it no longer felt inappropriate to pray for the injury to get better, and I did[1]. By morning I felt functionally improved to the point where the crutches were more trouble than they were worth--I no longer felt hypertension when standing, could walk unassisted, and could even run for short distances again. The calf was still swollen (even as I write this it's still about 1 cm bigger around than my right calf, although partly maybe that's because of fencing :)) and the doctors still spend a few more days worrying about it, but the real problem was gone.
Reflection:
For me, the interesting part of this experience was what was described in Doctrine and Covenants 46:28-30, being inspired what to pray for and what not to, and also knowing how that prayer would be answered. It's the first time I can remember experiencing anything like that.
"And it shall come to pass that he that asketh in Spirit shall receive in Spirit... He that asketh in the Spirit asketh according to the will of God; wherefore it is done even as he asketh."
-M.
[1] I also felt it was appropriate to ask for a blessing of healing from two guys in my platoon, Private Kelly and Private Allred in my platoon, who I had recently learned were both ordained elders in the priesthood--rather unusual for a military platoon to have three of us there but so it was. We found a handy supply closet and discreetly did the blessing in there just before bedtime.
--
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Wednesday, October 19, 2011
"They said it couldn't be done, and he did it"
Bjarne Stroustrup made an eloquent point about the importance of Ritchie's contributions to our field:"They said it couldn't be done, and he did it."
Here's what Bjarne meant:
Before C, there was far more hardware diversity than we see in the industry today. Computers proudly sported not just deliciously different and offbeat instruction sets, but varied wildly in almost everything, right down to even things as fundamental as character bit widths (8 bits per byte doesn't suit you? how about 9? or 7? or how about sometimes 6 and sometimes 12?) and memory addressing (don't like 16-bit pointers? how about 18-bit pointers, and oh by the way those aren't pointers to bytes, they're pointers to words?).
There was no such thing as a general-purpose program that was both portable across a variety of hardware and also efficient enough to compete with custom code written for just that hardware. Fortran did okay for array-oriented number-crunching code, but nobody could do it for general-purpose code such as what you'd use to build just about anything down to, oh, say, an operating system.
So this young upstart whippersnapper comes along and decides to try to specify a language that will let people write programs that are: (a) high-level, with structures and functions; (b) portable to just about any kind of hardware; and (c) efficient on that hardware so that they're competitive with handcrafted nonportable custom assembler code on that hardware. A high-level, portable, efficient systems programming language.
How silly. Everyone knew it couldn't be done.
C is a poster child for why it's essential to keep those people who know a thing can't be done from bothering the people who are doing it. (And keep them out of the way while the same inventors, being anything but lazy and always in search of new problems to conquer, go on to use the world's first portable and efficient programming language to build the world's first portable operating system, not knowing that was impossible too.)
Thanks, Dennis.
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Sunday, September 25, 2011
Shipping containers & cost of trade
Time was, plain old "how many miles away?" geography shaped trade networks. That didn't really last all that long, only until ships were invented and economic or trade geography became a thing of shipping routes. A millennia BC and Phoenicians were getting tin from Cornwall while people in Somerset weren't all that sure that Cornwall existed (a little extreme, yes, but not much). We're all aware of how the Portuguese navigators changed the spice trade, cutting out the various grasping hands in the Middle East looking for a slice, but the continuing superiority in cost of sea freight over land, even with railways, can astonish. It certainly astonished me to find that in the 1860s, getting wheat from Chicago to New York cost 17 per cent of the Chicago wheat value, while getting it from New York to London only cost 12 per cent of that Chicago value of wheat*.
What the shipping container has done is just about entirely take away geographical distance as a determinant of freight costs. It really doesn't cost much more to ship something from China to Europe than it does to ship something inside Europe. Beijing, Brisbane, Brindisi and Birmingham, they're really all just nodes on the container shipping routes and getting from one node to another costs about the same amount, wherever in the world they are.
OK, this is not entirely and strictly true, there are slight differences in shipping costs, but near enough as to make no difference. It's near impossible to pay more than $5,000 to get 40 tonnes in a container from any one node to any one other. [I]t costs $125 a tonne to get stuff from Shenzhen to Sheffield or from Santiago to Savannah.
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
UW CS and Bioscience in the news
http://scienceblog.com/47894/gamers-succeed-where-scientists-fail/
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
McGurk effect
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Sunday, September 11, 2011
"The science is settled"
Scientists have discovered that dinosaurs may have been much lighter and sleeker than previously thought because of potential flaws in the equations used to calculate their weight.
The findings could force researchers to rethink many of their beliefs, particularly about giant plant eaters such as apatosaurus which had been thought to weigh up to 37 tons. The creature's real weight was closer to 18 tons, according to new calculations.
Tyrannosaurus rex, the best-known predatory species, may have been far more lithe than imagined and able to move and turn at high speed.
"Palaeontologists have for 25 years used a statistical model to estimate the body weight of giant dinosaurs and other extraordinarily large extinct animals," said Gary Packard, from Colorado State University, whose research will appear in the Zoological Society of London's Journal of Zoology this week.
"We have found that the statistical model is seriously flawed and the giant dinosaurs probably were only about half as heavy as is generally believed."Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Burt Rutan : engineer
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
A scientific/political controversy
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Saturday, July 23, 2011
Article: Bill Gates on improving education
Of late, the foundation has been working on a personnel system that can reliably measure teacher effectiveness. Teachers have long been shown to influence students' education more than any other school factor, including class size and per-pupil spending. So the objective is to determine scientifically what a good instructor does.
"We all know that there are these exemplars who can take the toughest students, and they'll teach them two-and-a-half years of math in a single year," he says. "Well, I'm enough of a scientist to want to say, 'What is it about a great teacher? Is it their ability to calm down the classroom or to make the subject interesting? Do they give good problems and understand confusion? Are they good with kids who are behind? Are they good with kids who are ahead?
-M.
--
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
Hahahahaaaa!!! That is ME laughing at YOU, cruel world.
-Jordan Rixon
Saturday, July 2, 2011
Grand Strategy of Al Gore
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Bayesian Inference in F#
--
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Sunday, June 19, 2011
Do-it-yourself medicine?
--
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Friday, June 17, 2011
Iran and Nukes: What's the cost of preventing acquisition?
It may be too simple to reduce the argument to just two sides—those who fear the regime's acquisition of nuclear weapons more than the consequences of a war to prevent it, and those who fear the consequences of a war above all else—but in this case simplicity has the virtue of capturing the essence as observers ponder which set of unpalatable risks they would rather run. What is remarkable, though hardly surprising, is that the two sides usually put forth very different assessments of what using force would entail. Those who fear Iranian nukes above all else tend to minimize the risks of using force, while those who fear war tend to exaggerate them. Neither side, however, has persuasively spelled out the reasons for their assessment, leading one to suspect that much of the argument rests on less than rigorous analysis.
What would an honest assessment of the risks of military conflict with Iran look like? How should we think about it? These are difficult questions even for those who are not partisans of one side or the other. Wars are notorious for yielding unintended and unexpected consequences; for reasons explained below, a war against Iran is even harder than usual to bound analytically.
At least three concepts are key to any coherent discussion of a U.S.-Iranian military engagement: complexity, uncertainty and war itself. By complexity we mean the number of moving parts in a given situation: actors, processes and the connections among them. By uncertainty we mean structural uncertainty—that is, not just ignorance of the magnitudes of agreed casual factors, but the ignorance of the causal factors themselves, and their mutual relations. For example, not only may the U.S. government not know, say, the technical status of the Iranian nuclear program, or the actual state of readiness of Iranian forces. It may not know (or worse, have wrong) the decision-making and implementation protocols of the Iranian government, how the Iranian people and military would react to an attack, what Tehran would ask its allies and proxies to do, and what in fact they will do.As to the meaning of war, it may hardly seem worthwhile to probe something so self-evident, except that it is not self-evident anymore, if it ever was. A simple definition of war is the waging of armed conflict against an enemy, but this is too limited a concept in the 21st century. War in our time involves simultaneous conflict in the military, diplomatic, economic and social domains on four levels: political, strategic, operational and tactical.3 While a war with Iran might begin in the military domain, it would likely expand to others, and while it might begin at the operational or tactical level it would soon encompass strategic and political levels as well.
How these twin expansions would take place has everything to do with context. All wars have one. Would a U.S.-Iran war break out during a protracted diplomatic process, or in the absence or abeyance of one? Would it happen during a period of increasing tension and military readiness, or out of the blue, after one party thinks that the dangers of war have subsided? Would the U.S. government assemble a broad "coalition of the willing", just a few close allies-in-arms at the ready, or go it alone, even actively dissuading Israel from joining an attack? What would the domestic political situation be in the United States? Would there be an internal political consensus to act, or would there be an active, acrimonious debate? Would the American people be prepared for the aftermath of an initial attack, including rising oil prices and falling stock values? What would the economic situation be like in the United States and beyond? The answers to these questions would have a substantial impact on the war's course, conduct and outcome.
Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Sunday, June 5, 2011
Biological warfare
http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB61/
The first reports emerged in October 1979 by way of a Russian-language newspaper in Frankfurt, West Germany that was close to the Soviet emigre community, which ran a brief report lacking any details about a major germ accident leading to deaths estimated in the thousands taking place in Russia.(1) New details emerged in this same paper in early 1980, with reports of an explosion in April 1979 at a secret military installation near Sverdlovsk that released a large amount of anthrax spores into the air, again with a thousand people estimated dead from the disease.
...The Soviets replied angrily to these accusations, claiming that the deaths in Sverdlovsk were the result of eating tainted meat. A Tass article entitled "A Germ of Lying," which was published on March 24,1980, was typical, in combining the Soviet argument that a natural outbreak of anthrax, which was endemic to the area, with condemnation of the U.S. accusations as part of a plan for "spurring up the arms race and] intensifying tensions in the relations between states," calling into question the validity of the 1972 biological arms convention, and waging psychological warfare against the USSR.(2) U.S. intelligence analysts quickly dismissed the Soviet explanation as not in accordance with the evidence.
...Soviet scientists again presented this explanation along with examples of the autopsy data at scientific meetings in Washington, D.C., Baltimore and Cambridge in April 1988 arranged by Meselson, who gave his view that the tainted-meat explanation was "completely plausible and consistent" with current knowledge about anthrax. Also lending plausibility to the Soviet version was the fact that veterinarians had reported animal deaths from anthrax before doctors reported human fatalities at Sverdlovsk. Though Meselson agreed there was need for a thorough investigation of the U.S. accusations, Meselson testified before a Senate hearing in 1989 that the evidence supported the Soviet explanation, not an explosion at a Soviet biological weapons facility.
...Yeltsin had a personal connection to the Sverdlovsk issue, as he had been Communist Party chief in the region at the time of the anthrax outbreak, and he believed the KGB and military had lied to him about the true explanation. At a summit meeting with President George Bush in February 1992, Yeltsin told Bush that he agreed with U.S. accusations regarding Soviet violation of the 1972 biological weapons convention, that the Sverdlovsk incident was the result of an accident at a Soviet biological warfare installation, and promised to clean up this problem. In a May 27th interview, Yeltsin publicly revealed what he had told Bush in private:
"We are still deceiving you, Mr. Bush. We promised to eliminate bacteriological weapons. But some of our experts did everything possible to prevent me from learning the truth. It was not easy, but I outfoxed them. I caught them red-handed. I found two test sites. They are inoculating tracts of land with anthrax, allowing wild animals to go there and observing them..."(5)
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Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
Hahahahaaaa!!! That is ME laughing at YOU, cruel world.
-Jordan Rixon
Wednesday, May 4, 2011
Perspective
Pessimist: the glass is half empty.
Realist: the glass exists.
Idealist: well, the glass SHOULD be full.
Fatalist: it's just going to evaporate anyway.
Anarchist: break the glass!
Capitalist: let's sell this glass!
Feminist: HIS glass looks fuller than MY glass.
Chemist: the glass is 50% H2O, 40% N2, and 10% O2.
Engineer: the glass is twice the required size.
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Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
-Jordan Rixon
Monday, April 25, 2011
Interesting polling technique
Tuesday, April 12, 2011
Pascal quote
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Be pretty if you are,
Be witty if you can,
But be cheerful if it kills you.
If you're so evil, eat this kitten!