25 August 2010
Classes start today. Back at it; I’ll be busy with a rewrite and classes, and rehabbing my knee/shoulder.
Politics Senator Jim Inhofe calls Senator John McCain a “closet liberal”. I say: Senator Inhofe is an out of the closet loon (creationist, climate change denier, etc.)
But Senator McCain did win his reelection primary (57-32 at of last night) and will probably win reelection.
Science
Mice can be trained to sniff out disease:
Scientists have trained mice to recognize the whiff of bird flu in duck poop, and they think they can train dogs to do the same thing. If so, flu-sniffing dogs — or chemical sensors built to duplicate this not-so-stupid pet trick — could become a new line of defense in the fight against epidemics.
The latest findings focus on the detection of avian influenza, a.k.a. bird flu. But Bruce Kimball, a U.S. Department of Agriculture researcher who presented the study today in Boston at a meeting of the American Chemical Society, suggested that the trick could be used to sniff out other diseases as well. “To be honest with you, I think we could demonstrate this type of effect in a lot of areas,” he told me.
Human evolution Here is an interview with a scientist who thinks that tools really forced human evolution; that is, it wasn’t mostly natural selection after a certain point:
You begin your book The Artificial Ape by claiming that Darwin was wrong. In what way?
Darwin is one of my heroes, but I believe he was wrong in seeing human evolution as a result of the same processes that account for other evolution in the biological world – especially when it comes to the size of our cranium.
Darwin had to put large cranial size down to sexual selection, arguing that women found brainy men sexy. But biomechanical factors make this untenable. I call this the smart biped paradox: once you are an upright ape, all natural selection pressures should be in favour of retaining a small cranium. That’s because walking upright means having a narrower pelvis, capping babies’ head size, and a shorter digestive tract, making it harder to support big, energy-hungry brains. Clearly our big brains did evolve, but I think Darwin had the wrong mechanism. I believe it was technology. We were never fully biological entities. We are and always have been artificial apes.
So you are saying that technology came before humans?
The archaeological record shows chipped stone tool technologies earlier than 2.5 million years ago. That’s the smoking gun. The oldest fossil specimen of the genus Homo is at most 2.2 million years old. That’s a gap of more than 300,000 years – more than the total length of time that Homo sapiens has been on the planet. This suggests that earlier hominins called australopithecines were responsible for the stone tools.
Is it possible that we just don’t have a genus Homo fossil, but they really were around?
Some researchers are holding out for an earlier specimen of genus Homo. I’m trying to free us to think that we had stone tools first and that those tools created a significant part of our intelligence. The tools caused the genus Homo to emerge.
I don’t know how this conjecture will play out.
Social From NPR: young people are struggling to find athletes to use as a hero or role model.
My take: so what? Being a good athlete means that you are good at sports. That is fine; I enjoy boxing,NBA, NFL and track action. But being a good athlete hardly means being a hero. Scandals? Meh. Sure, I don’t like cheating. But this off the field/court/out of the ring stuff means little; these peoples are really a type of entertainer and not much else. Scandals involving our elected leaders or, say, scientists who falsify research bother me much more.
10 November 09 (noonish)
Personal note: I am feeling weird; just “off”. My digestion is out of whack, I have some thigh aches (due to the stepper?) and am just “off” and tired. I am recording this so I can see if this leads to sickness or not. I am not feeling horrible; my workout this morning was slightly sub par but within standard variation.
Posts
First, a humorous blog story:
We all get spam in our mail box and usually there’s nothing you can do about it. This time there is. I got this message today.
Subject: Award Acknowledgment for sharing great PHYSICS information to the public
Dear Blog Owner,
Our website Science.org is a informational databases and online news publication for anything and everything related to science and technology. We recently ran a poll asking our website users regarding what online informational resources they use to keep up to date or even to simply find great information. It seems many of our users have labeled your blog as an excellent source of Space information.
Note: his blog is about biochemistry and evolution. I had to chuckle.
Back when I was an undergraduate, I subscribed to Scientific American for a short while. Hence I got on some lists and I got an invitation to subscribe to some other science publication (I can’t remember which one). But I remember how the invitation started:
Dear Colleague,
We know of your work and….
And I thought: “they graded my advanced calculus homework?”
Remember that I was a run of the mill undergraduate pin-head at the time; I hadn’t done any individual research.
My friends and I had a big laugh.
Other topics
Here is an interesting case on free/anonymous speech. Note: sometimes the Constitution is on the side of the tasteless jerk.
Religion This billboard in Italy sums up what I think: “I prefer to reason rather than to believe”.
Nevertheless, religion is sometimes an appropriate topic for discussion, and yes, it is ok to attack religious beliefs (e. g., supremacy of a race, beliefs that contradict scientific evidence, beliefs that advance bigotry, etc.):
The Issue
Last week the Vatican invited Anglicans who are, as The New York Times put it, “uncomfortable with female priests and openly gay bishops” to reunite with the Roman Catholic Church. If a secular institution, Wal-Mart or Microsoft, for example, made a similar offer — Tired of leadership positions being open to women and gay employees? Join us! — it would be slammed for appealing to bigotry. Some criticism was directed at the church, but it was faint. Are we right to speak softly when discussing a subject as sensitive as religion?
Etiquette holds that religion, especially another person’s religion, should be treated with deference or, better still, silence by nonbelievers. [....]
Yet despite the risk of provoking the ire of believers, we should discuss the actions of religious institutions as we would those of all others — courteously and vigorously. This is a mark of respect, an indication that we take such ideas seriously. To slip on the kid gloves is condescending, akin to the way you would treat children or the frail or cats.
[...] The week I rebuked an Orthodox Jewish real estate agent whose beliefs forbade his shaking the hand of a female client, I stopped counting after receiving 4,000 ferocious messages, lambasting not only my argument but my character, my appearance and my parentage: it was speculated that dogs played a part.
My political beliefs, my ideas about social justice, are as deeply held as my critics’ religious beliefs, but I don’t ask them to treat me with reverence, only civility. They should not expect me to walk on tiptoe.
Emphasis mine.
Racism and America
Some of subtle kind is discussed here:
Predictably, after the Ft. Hood shooting some idiot conservatives are suggesting that we do some sort of loyalty exam for Muslim-Americans before allowing them into the US military. Who is “we”? Who gets to do this exam? What, presumably more American people like whites or Christians?
Why don’t Muslim Americans decide which Christians get to enter the US military? Oh, does that sound offensive? Does it sound weird? Why should it sound any different than Christians getting to decide which other Americans they will allow into the US military?
* Cenk Uygur’s diary :: ::
*A lot of people are rightfully making the point that you can not generalize about millions of Muslims in this country based on two guys. Just as you cannot generalize about all right-leaning white Christians (let alone all Christians in their entirety) based on what domestic terrorists like Tim McVeigh did, or Terry Nichols, or Eric Rudolph, or Scott Roeder or …
But there is a more important point here. Muslims Americans don’t have to prove a damn thing to you. They are Americans just like anyone else, whether right-wing clowns like it or not. They are not 80% American. They are not 90% as American as you are. You don’t get to judge how American they are.
Here is the inalterable fact that the right-wing of this country has to get used to – Muslim-Americans are 100% American. There are no degrees of how American you are. They have the same exact rights, privileges and responsibilities as any other American does. They don’t have to answer to you.
I’m agnostic now, but I was born Muslim. My whole family is Muslim. They’re all Americans. Not one of them is one percent less of an American than any other race or religion in this country.
“So what”, you say? Let me ask this: why is it that every time someone like Louis Farrakhan says something idiotic, some right wingers expect prominent African American leaders to denounce him? There were times when Americans of Mexican descent were supposed to denounce something stupid that the Mexican government did. Why is that?
In all honesty, if your skin isn’t white, you are always going to be viewed as a “guest”; perhaps an accepted guest or maybe a part of the adopted family. It is subtle, but it is there.
Of course, there are less subtle racists out there and they are getting more brazen.
Paul Krugman: has some advice on how to break up a filibuster.
He also tells people to cut the crap when they are looking for convenient scapegoats for the mortgage crisis:
In the midst of a seriously disgusting interview with Dick Armey, the former House majority leader offers his analysis of the financial crisis:
But at what point do we allow the government to order people that you must sell your product to this person or that person, irrespective of any good judgment? We saw what happened in housing when they ordered banks to make loans to people who weren’t qualified. Are we now going to have the same destructive influences in health care because we’re going to order doctors to provide services and so forth?
There’s a persistent delusion, on the part of many pundits, to the effect that we’re actually having a rational political discussion in this country. But we aren’t. The proposition that the Community Reinvestment Act caused all the bad stuff, because government forced helpless bankers into lending to Those People, has been refuted up, down, and sideways. The vast bulk of subprime lending came from institutions not subject to the CRA. Commercial real estate lending, which was mainly lending to rich white developers, not you-know-who, is in much worse shape than subprime home lending. Etc., etc.
In other words, what many people “know” just isn’t so.
3 May 2009: Link Dump for the Day
Jack Kemp: rest in peace.
Jack Kemp was a Buffalo Bills quarterback, a long time US Representative and Bob Doles running mate in 1996. Though I disagreed with him on some issues, he is someone who had a good heart and cared about the less fortunate. He was the kind of Republican that I respected even if we had a different vision on how to attain the same goal.
I’ll miss him.
Science
Bill Maher nails it on evolution and the current strain of the Swine flu:
Science and the Cosmos
It is known (from quantum mechanics) that observation affects the state of a system; the state of a system has a “wave function” assigned to it and observation “collapses the wave function.” This is highly counter-intuitive.
Physicists have tried to come up with models to explain this, and one of them is the so-called biocentric model: this model supposes that life is what creates time, space and the cosmos! This article attempts to explain this school of thought:
Figuring out the nature of the real world has obsessed scientists and philosophers for millennia. Three hundred years ago, the Irish empiricist George Berkeley contributed a particularly prescient observation: The only thing we can perceive are our perceptions. In other words, consciousness is the matrix upon which the cosmos is apprehended. Color, sound, temperature, and the like exist only as perceptions in our head, not as absolute essences. In the broadest sense, we cannot be sure of an outside universe at all.
Ok, then why do different people come to the same conclusion?
SEEKING SPACE AND TIME
Even the most fundamental elements of physical reality, space and time, strongly support a biocentric basis for the cosmos.According to biocentrism, time does not exist independently of the life that notices it. The reality of time has long been questioned by an odd alliance of philosophers and physicists. The former argue that the past exists only as ideas in the mind, which themselves are neuroelectrical events occurring strictly in the present moment. Physicists, for their part, note that all of their working models, from Isaac Newton’s laws through quantum mechanics, do not actually describe the nature of time. The real point is that no actual entity of time is needed, nor does it play a role in any of their equations. When they speak of time, they inevitably describe it in terms of change. But change is not the same thing as time.
To measure anything’s position precisely, at any given instant, is to lock in on one static frame of its motion, as in the frame of a film. Conversely, as soon as you observe a movement, you cannot isolate a frame, because motion is the summation of many frames. Sharpness in one parameter induces blurriness in the other. Imagine that you are watching a film of an archery tournament. An archer shoots and the arrow flies. The camera follows the arrow’s trajectory from the archer’s bow toward the target. Suddenly the projector stops on a single frame of a stilled arrow. You stare at the image of an arrow in midflight. The pause in the film enables you to know the position of the arrow with great accuracy, but you have lost all information about its momentum. In that frame it is going nowhere; its path and velocity are no longer known. Such fuzziness brings us back to Heisenberg’s uncertainty principle, which describes how measuring the location of a subatomic particle inherently blurs its momentum and vice versa.
All of this makes perfect sense from a biocentric perspective. Everything we perceive is actively and repeatedly being reconstructed inside our heads in an organized whirl of information. Time in this sense can be defined as the summation of spatial states occurring inside the mind. So what is real? If the next mental image is different from the last, then it is different, period. We can award that change with the word time, but that does not mean there is an actual invisible matrix in which changes occur. That is just our own way of making sense of things. We watch our loved ones age and die and assume that an external entity called time is responsible for the crime.
There is a peculiar intangibility to space, as well. We cannot pick it up and bring it to the laboratory. Like time, space is neither physical nor fundamentally real in our view. Rather, it is a mode of interpretation and understanding. It is part of an animal’s mental software that molds sensations into multidimensional objects.
In short, what we know of the universe is some sort of approximation that our brains are capable of making..or does our attempting to make sense of it make it what it is? What if there were other observant beings out there? How does their observation affect the cosmos, or how does it affect what we interpret as the cosmos? It looks as if my reading list got a bit longer.
Speaking of books, perhaps I should blog less and read more? Then maybe my powers of concentration would go up and I might become more creative?
As far as the David Brooks article: I still think that natural talent is real; I could think about things all day for years at a time and never become, say, a Terrance Tao. (Fields Medalist).
Side note: I am going to certainly use my recent teaching experience (linear algebra, abstract algebra, differential equations) as a springboard to finish up some mathematics articles and to read up on some (new to me) research techniques.
Swine Flu
Here is an excellent article about how public health agencies react to potential pandemics, why these reactions sometimes seem like over reactions, and what the goals are.
In a nutshell this is what happens: if public health organizations react quickly to keep the disease from spreading in the first place, the time to the peak of the disease (in terms of the number of people getting sick) is longer and the number of people getting sick at the peak is far lower:

And here is what happened in 1918 (Philadelphia, which took no preventative steps versus St. Louis, which did)

I fully welcome feedback from doctors, public health people, biologists, and those who know more.
Maher evolution
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