12/14/11

Permalinkby 05:56:08 pm, Categories: Commentary - OpEd, 262 words   English (CA)

When freakonomics invades science ...

by Denyse O'Leary
ARN correspondent

In the recent social sciences scandals, there was an obvious "freakonomics" factor: Really weird findings that do not directly upset elite pieties get massive attention and little analysis. Now, in "Freakonomics: What Went Wrong?" (American Scientist, statistics teachers Andrew Gelman and Kaiser Fung explain, "Examination of a very popular popular-statistics series reveals avoidable errors":

In our analysis of the Freakonomics approach, we encountered a range of avoidable mistakes, from back-of-the-envelope analyses gone wrong to unexamined assumptions to an uncritical reliance on the work of Levitt's friends and colleagues. This turns accessibility on its head: Readers must work to discern which conclusions are fully quantitative, which are somewhat data driven and which are purely speculative.

The risks of driving a car: In SuperFreakonomics, Levitt and Dubner use a back-of-the-envelope calculation to make the contrarian claim that driving drunk is safer than walking drunk, an oversimplified argument that was picked apart by bloggers. The problem with this argument, and others like it, lies in the assumption that the driver and the walker are the same type of person, making the same kinds of choices, except for their choice of transportation. Such all-else-equal thinking is a common statistical fallacy. In fact, driver and walker are likely to differ in many ways other than their mode of travel. What seem like natural calculations are stymied by the impracticality, in real life, of changing one variable while leaving all other variables constant.

Some good suggestions for avoiding stats scams.

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 05:54:58 pm, Categories: Commentary - OpEd, 399 words   English (CA)

Now we know at last! Decline of elephants caused rise of modern humans!

by Denyse O'Leary
ARN correspondent

From "Disappearance of the Elephant Caused Rise of Modern Humans: Dietary Change Led to Modern Humans in Middle East 400,000 Years Ago," (ScienceDaily, Dec. 12, 2011), we learn:

The elephant, a huge package of food that is easy to hunt, disappeared from the Middle East 400,000 years ago -- an event that must have imposed considerable nutritional stress on Homo erectus.
There are so many holes in this story, it should be a fish net. There is considerable evidence of varied human diet from great antiquity - which we should expect, given that people can starve waiting for big game - and the longer they starve, the less capable they are.
Unlike other primates, humans' ability to extract energy from plant fiber and convert protein to energy is limited. So in the absence of fire for cooking, the Homo erectus diet could only consist of a finite amount of plant and protein and would have needed to be supplemented by animal fat. For this reason, elephants were the ultimate prize in hunting -- slower than other sources of prey and large enough to feed groups, the giant animals had an ideal fat-to-protein ratio that remained constant regardless of the season. In short, says Ben-Dor, they were the ideal food package for Homo erectus.
Except for one thing: The carcass goes bad after a few days. Maybe the theory is that homo erectus didn't notice. Even the flies and worms didn't bother him. Or, even though he couldn't cook, he knew how to salt and dry pemmican?
When elephants began to die out, Homo erectus "needed to hunt many smaller, more evasive animals. Energy requirements increased, but with plant and protein intake limited, the source had to come from fat. He had to become calculated about hunting," Ben-Dor says, noting that this change is evident in the physical appearance of modern humans, lighter than Homo erectus and with larger brains.
One thing their implausible thesis doesn't lack is confidence:
Not only do their findings on elephants and the Homo erectus diet give a long-awaited explanation for the evolution of modern humans, but they also call what scientists know about the "birth-place" of modern man into question.

Incidentally, if these people think elephants are dead easy to kill, they need to read George Orwell's "Shooting an Elephant."

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 05:49:14 pm, Categories: Commentary - OpEd, 184 words   English (CA)

Were early tetrapod tracks produced by walking fish?

by Denyse O'Leary
ARN correspondent

From "A Small Step for Lungfish, a Big Step for the Evolution of Walking" (ScienceDaily, Dec. 12, 2011), we learn,

Extensive video analysis, published in the Proceedings of the National Academy of Sciences, reveal that the African lungfish can use its thin pelvic limbs to not only lift its body off the bottom surface but also propel itself forward. Both abilities were previously thought to originate in early tetrapods, the limbed original land-dwellers that appeared later than the lungfish's ancestors.

The observation reshuffles the order of evolutionary events leading up to terrestriality, the adaptation to living on land. It also suggests that fossil tracks long believed to be the work of early tetrapods could have been produced instead by lobe-finned ancestors of the lungfish.

Maybe.

Walking fish are nothing new, but there's more to terrestrial life than that.

See also: Land-based fish helps researchers assess how animals moved to land – and stayed there

Darwinists censor writer re: Fish that jump onto land unaided complicate the water-to-land transition story

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 05:48:03 pm, Categories: Commentary - OpEd, 359 words   English (CA)

Another atheist checks out of no consciousness/no free will

by Denyse O'Leary
ARN correspondent

In "You don't really exist, do you?" (December 10, 2011), at his blog Rationally Speaking, philosopher Massimo Pigliucci,
offers reasons to reject the materialist claim that our consciousness is an illusion:

For some time I have been noticing the emergence of a strange trinity of beliefs among my fellow skeptics and freethinkers: an increasing number of them, it seems, don't believe that they can make decisions (the free will debate), don't believe that they have moral responsibility (because they don't have free will, or because morality is relative — take your pick), and they don't even believe that they exist as conscious beings because, you know, consciousness is an illusion.
As co-author with Jerry Fodor of What Darwin Got Wrong, he might be expected to have thought of this:
... a closer look at the evidence does not bear out the increasingly persistent myth that "it's all unconscious anyway." Here very interesting work has been done by Alfred Mele at Florida State University. In his Effective Intentions: The Power of Conscious Will, Mele critically examines claims to the effect that, for instance, our brains make decisions before we become conscious of them, or that intentions don't play a role in producing actions. He finds the evidence for such extraordinary claims extraordinarily deficient and — to the contrary — lines up evidence from neurobiology for the conclusion that consciousness plays a major role in (some, most certainly not all) of our decisions, particularly when it comes to the sort of decisions we normally do attribute to conscious deliberation (like whether to change career, say, not just when to push a button on a computer screen, a la Libet experiments).
As a matter of fact, the older one gets, the more likely one is to take some time to make a decision - because all aspects of one's mind are not reporting at once. Not all decisions are equally easy, or fact-rich.

That is why David Brooks' "The young and the neuro" have got it all wrong.

It's interesting how many atheists are pulling back from the materialist conclusions.

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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12/09/11

Permalinkby 03:35:43 pm, Categories: Commentary - OpEd, 129 words   English (CA)

Butterfly expert Bernard d'Abrera on the "media- and academia-generated program of propaganda" that props up science

by Denyse O'Leary
ARN correspondent

Natural Science is now in grave disrepute. It survives in its present from only because of a media- and academia-generated program of propaganda which needs the constant distractions of novelties, spurious discoveries, outright fraud, and smokescreens of personal invective, all of which are designed to keep the punters guessing, and ordinary people from asking the most fundamental of philosophical questions about cause and effect, reason and purpose, and loss and gain. ... This is not science. This is unmitigated wickedness.

- Metamorphosis, p. 52 (a companion book to the film, Metamorphosis

Strong stuff. But spend a while on the "The Aliens are really OUT There!" desk and you'll find it harder to disagree.

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 03:34:38 pm, Categories: Commentary - OpEd, 23 words   English (CA)

Unambiguous evidence for water on Mars

by Denyse O'Leary
ARN correspondent

A long time ago Here.

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 03:31:29 pm, Categories: Commentary - OpEd, 72 words   English (CA)

Richard Dawkins on the origin of life

by Denyse O'Leary
ARN correspondent

Speaking of Dawkins, "I watch from the sidelines with engaged curiosity, and I shall not be surprised if within the next few years, chemists report that they have successfully midwifed a new origin of life in the laboratory." - The God Delusion, 2006, p. 165. Anyone remember which year it was that the great breakthrough occurred?

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 03:24:11 pm, Categories: Commentary - OpEd, 250 words   English (CA)

Grappling with Earth's rarity

by Denyse O'Leary
ARN correspondent

In "Life on Earth: Is our planet special?" (BBC News , 9 December 2011), Howard Falcon-Lang tells us,

Far from being unique, many now regard Earth as an ordinary lump of space rock and believe that life "out there" is almost inevitable. But could the truth be somewhat more complex?

On Friday, top scientists are meeting at the Geological Society in London to debate this very issue, posing the question: "Is the Earth special?". What emerges is that aspects of our planet and its evolution are remarkably strange.

Prof Monica Grady is a meteorite expert at the Open University. She explained in what sense the Earth could be considered special.

"Well, there are several unusual aspects of our planet," she said. "First is our strong magnetic field. No one is exactly sure how it works, but it's something to do with the turbulent motion that occurs in the Earth's liquid outer core. Without it, we would be bombarded by harmful radiation from the Sun."

It gets better.

A key barrier to determining the odds of the habitability of other planets has been the need to minimize the ways in which Earth is special. "Special" doesn't mean that no other planets could be like Earth, but that we need to assess our chances rationally.

As opposed to pointless speculation like "Could exoplanets support life that has a different chemical composition?" Absent the proposed composition, who knows?

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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12/03/11

Permalinkby 06:08:26 pm, Categories: Commentary - OpEd, 321 words   English (CA)

Physorg: Fossil tintinnids from 635-715 mya "could have been floating about hundreds of millions of years earlier"

by Denyse O'Leary
ARN correspondent

Here's Physorg on those recently found tintinnids from 635-715 million years ago. In "New fossils reveal oldest known ciliates" (November 16, 2011), Jennifer Chu reports,

Anyone who has taken high school biology has likely come into contact with a ciliate. The much-studied paramecium is one of 7,000 species of ciliates, a vast group of microorganisms that share a common morphology: single-celled blobs covered in tiny hairs, or cilia. These cilia — Greek for "eyelash" — are used to propel a microbe through water and catch prey.

Now, geologists at MIT and Harvard University have unearthed rare, flask-shaped microfossils dating back 635 to 715 million years, representing the oldest known ciliates in the fossil record. The remains are more than 100 million years older than any previously identified ciliate fossils, and the researchers say the discovery suggests early life on Earth may have been more complex than previously thought. What's more, they say such prehistoric microbes may have helped trigger multicellular life, and the evolution of the first animals.

"These massive changes in biology and chemistry during this time led to the evolution of animals," says Tanja Bosak, the Cecil and Ida Green Career Development Assistant Professor in MIT's Department of Earth, Atmospheric and Planetary Sciences. "We don't know how fast these changes occurred, and now we are finding evidence of an increase in complexity."

Nicholas Butterfield, a lecturer in paleobiology at the University of Cambridge in the U.K., says the group's findings provide convincing evidence for ancient organisms that are "significantly similar" to modern ciliates. However, in his view, the fossils mark a minimum date for the evolutionary appearance of tintinnids — the hairy organisms could have been floating about hundreds of millions of years earlier.

This is not the Darwin forced on us in school. It's not Darwin at all.

See also: Why do some life forms never really die?

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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Permalinkby 06:07:27 pm, Categories: Commentary - OpEd, 447 words   English (CA)

No Higgs boson? Well, what about Higgsinos or techniquarks ...

by Denyse O'Leary
ARN correspondent

In "Can physicists crack the big puzzle?" ( MSNBC Cosmic Log, November 30, 2011), Alan Boyleinterviews Oxford physicist Frank Close on his new book, The Infinity Puzzle , wherein we learn that "an even bigger puzzle remains: Why is the cosmos built the way it is?" Meanwhile,

Q: When it comes to the Higgs boson, the question has arisen as to whether it actually exists. One of my colleagues has joked that if it's found, that's worth a Nobel. And if it's ruled out, that's worth a Nobel as well. Is that the way it works?

A: The idea that has led to the Higgs boson is a piece of beautiful mathematics. Whether nature actually does it is a question that only experiments can answer. Although the theorists are the ones that get all the press ... the Einsteins and the other names that trip off the tongue ... it's ultimately the experiments that decide. That's where we are at the moment.

The idea that there should be a Higgs boson, or something else that masquerades as that particle, has been around for a long time. It's only now that are finally able to do the experiments that will tell us one way or the other if that is the case. And if it is the case, we might find out exactly how nature plays this particular trick. When Peter Higgs and a group of other people first put the idea forward, they were trying to solve a particular conundrum, and they came up with the simplest way of doing it — that is, that there was a single particle known as the Higgs boson. That was 50 years ago. Since then, people have refined those original ideas, based on the discoveries we have made.

There are several possible ideas as to how nature might actually do this conjuring trick. It might be there's a whole family of particles called Higgsinos and other weird names. It might not be a simple particle. It might be a compound — just as an atom has a nucleus that's made of protons and neutrons, which are made of smaller things called quarks, there might be new sorts of particles waiting to be found, called techniquarks, which collectively act as if they were a single boson.

It might be those, it might be something else. We simply don't know. And that's the exciting thing. Nature knows the answer at the moment, and we're trying to find out at last what it is.

We didn't know that nature was a personality who could know anything, but we didn't know about Higgsinos and such ...

Denyse O'Leary is co-author of The Spiritual Brain. Follow UD News at Twitter!

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