May 23 2017

Graecopithecus – Possible Early Human Ancestor from Europe

graecopithecusFinding fossils is like finding pieces to a jigsaw puzzle, although we don’t know what the final picture is, or where the edges are, and the pieces themselves are damaged or partial and so it is not always clear if they fit. A piece may seem to fit in one location, but it actually goes somewhere else. Sometimes one section of the puzzle can come together, but you are still not sure where it fits into the greater puzzle. But eventually a clear picture can emerge.

For the last century paleontologists have been trying to piece together the puzzle of human evolution. It’s hard to say how close we are getting to having a reasonably complete picture, because again we don’t know how big the puzzle is or where the edges are. One way to get a sense of where we are is this – with each new fossil find is the puzzle getting bigger and more complex or are we filling in known gaps? It’s definitely some of both, but mainly the puzzle is still getting bigger. We don’t know yet how much we don’t know. We’re not just connecting the dots, we keep adding new dots.

A recent analysis of one potential hominin makes the picture more complex still. Graecopithecus is known from a lower jaw and an upper pre-molar. That is not much, which is why the papers on this fossil all describe is at a “possible” early human ancestor. If Graecopithecus turns out to be legit, then it would be the oldest human ancestor after the split with chimpanzees, and it would move the likely location for that split from sub-Saharan Africa to the Mediterranean.

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Comments: 27

May 22 2017

The Smart Meter Hubbub

smart-meter-exampleSame story, different day.

While the details of specific topics change, people are the same. They commit the same fallacies and errors in thinking, and so the patterns of arguments tend to be the same.

Many power companies are replacing the old analogue meters with digital smart meters – devices that measure how much electricity you use and therefore need to be billed for. The newer meters are able to gather more information about electricity usage, not just overall usage. They can measure when you are using electricity throughout the day, for example. They can also communicate this information to the power company wirelessly, eliminating the need to have someone come to your home to read the meter.

There is an obvious efficiency to this increased data and communication. Further, one of the most challenging aspects of power production is balancing production and demand. Demand also tends to peak at certain times, which means that power companies need to have a lot of extra capacity that kicks in just for peak usage. Peak power production tends to be the least efficient and most expensive.

One hope is that smart meters will allow for peak shaving – giving customers information they can use to shift their energy usage off peak.

So what’s the controversy? The same litany of mostly made up complaints and conspiracy theories that seem to crop up for any new technology. Just about every complaint about smart meters has an analogy with vaccines and GMOs, for example, and generally the same crowd are complaining.  Continue Reading »

Comments: 23

May 19 2017

Young Earth Creationists and the Grand Canyon

Andrew Snelling is a young-earth creationist with a PhD in geology who wants to study the Grand Canyon. The National Park Service (NPS), which regulated who gets to do science in Grand Canyon National Park, turned down his application. You can probably guess what happened next.

Snelling is now suing the NPS and the Department of Interior for religious discrimination. He claims his application was turned down because of his religious views. That does not seem to be the case. The NPS had experts review his application. They determined that his science was not valid, and that the rocks he wanted to remove from the park could be found elsewhere. The NPS is particularly careful about any research that involves removing material from parks.

It seems clear to me that the NPS is on solid ground (heh). They already have a process in place to determine if scientific applications are for worthy science and if they justify the removal of material from a park. They did proper peer-review and abided by the recommendations of their experts. This does not appear to have anything to do with what Snelling believes, but the quality of his science.  Snelling is now being a whiny b**ch. He also appears to be using this for propaganda purposes, which may have been the whole idea from the beginning.

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Comments: 22

May 18 2017

Follow Up on Bem’s Psi Research

telepathyAn interesting article in Slate by Daniel Engber reviews the story of Daryl Bem and his psi “Feeling the Future” research. If you are interested in this sort of thing the entire article is worth a read, but I want to highlight and expand upon the important bits.

For review, in 2011 Bem published a series of 10 experiments in the Journal of Personality and Social Psychology (JPSP). I wrote about the research at the time, and wasn’t impressed. I wrote:

“In the final analysis, this new data from Bem is not convincing at all. It shows very small effects sizes, within the range of noise, and has not been replicated. Further, the statistical analysis used was biased in favor of finding significance, even for questionable data.”

Bem had taken standard social psychology experimental protocols, mostly dealing with priming, and did an interesting thing – he reversed the order of the experiment so that the priming came after the subjects were tested. For example, he would give subjects a memory test and then let some of them study the material. He claimed that the studying had an effect backward in time to allow subjects to perform slightly better.

For experienced skeptics, this was not much of a surprise. When dealing with claims that have a vanishingly small prior probability, you need extraordinary evidence to be taken seriously, and this wasn’t it. We were already very familiar with these kinds of results – if you squint just right there is a teeny tiny effect size. But we already knew that experiments are easy to fudge, even unwittingly, and it would therefore take a lot more to rewrite all the physics textbooks. (What is more likely, that the fundamental nature of reality is not what we thought, or Bem was a little sloppy in his research?) The key (as acknowledged by Bem himself) would be in replication.  Continue Reading »

Comments: 148

May 16 2017

The Impact That Killed the Dinosaurs

asteroid impactI have loved science as long as I can remember, partly because scientists have the best stories to tell. The stuff that actually happened is usually far more interesting than any fantasy, and has the added bonus of being real. Reality is complex, dramatic, and interesting. Reality is also endlessly surprising.

Lucas wanted to evolve Star Wars. I always thought that was an interesting idea, adding a new layer to the film medium. It would love to see a great director do that well, not only updating special effects, but evolving the story as the culture evolves. Unfortunately, most of the changes Lucas made were crap, watering down character arcs and adding blandness. Some of the extra CG was OK.

Science stories, however, seem to always just get more interesting. That is because the universe has already written the entire script from the beginning, and we are just peeling back the narrative layers one by one. As the story gets deeper, it all makes sense because it has to. Plot twists are never contrived, because they were baked in from the beginning.  Continue Reading »

Comments: 21

May 15 2017

MMA vs Wushu – A Fight Between Reality and Fantasy

MMAvsWushuWhen magic and fantasy come up against hard reality, reality wins. One clear demonstration of this are literal fights between fantasy and reality.

There are now multiple videos online of fights between mixed martial arts fighters (MMA) and various forms of traditional Chinese martial arts. They all go the same way – the MMA fighters demolish the traditional fighters in seconds.

At the extreme end of the traditional fighters are the chi masters. They claim that they can channel their magical life force, chi, to weaken, block, and even incapacitate their foes. The first part of this video shows a chi master in action. You can see how apparently effective chi is against indoctrinated students (who have “drunk the dojo koolaid”). In the second half of the video you can see how spectacularly ineffective chi is against an MMA fighter.

In a similar recent competition, MMA fighter Xu Xiaodong had an open challenge to any traditional fighter, and Wei Lei, a practitioner of the “thunder style” of tai chi, accepted his challenge. The fight went like all the others- Wei Lei was crushed in 10 seconds.

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Comments: 53

May 12 2017

Rational Arguments for God?

BuddhismI honestly don’t care what people choose to believe about unknowable speculations outside the realm of science and human knowledge. As long as they don’t use such belief as justification for public policy or to infringe on the rights of others, believe whatever you want.

However, once someone claims that they have scientific evidence for a supernatural belief, or can prove such a belief logically, then they have stepped into the arena of logic and science and their claims can be examined.

One such claim is that the existence of God can be proven through various logical arguments. I have never seen such an argument that I found even slightly compelling. They all have gaping holes in their logic. The latest incarnation comes from Robert Nelson, who appears to be promoting his 2015 book, “God? Very Probably.”  He claims to have five rational arguments that lead to the conclusion that God very probably exists. Let’s take a look. Continue Reading »

Comments: 281

May 11 2017

Open Letter to FDA on Acupuncture

The FDA recently amended their draft proposal for: FDA Education Blueprint for Health Care Providers
Involved in the Management or Support of Patients with Pain. The draft proposal includes this statement:

“Nonpharmacologic therapies – includes psychological, physical rehabilitative, surgical approaches; and complementary therapies.”

And below further defines, ” Complementary therapies – e.g., acupuncture, chiropracty”


“HCPs should be knowledgeable about the range of available therapies, when they may be helpful, and when they should be used as part of a multidisciplinary approach to pain management.”

While the current problems with opioid overuse are significant and adequate pain management remains a challenge, introducing unscientific methods will not help health consumers and will only waste resources. Introduction of these recommendations for unscientific methods does not reflect scientific consensus, but intense lobbying by proponents who stand to financially gain from their inclusion.

Acupuncture specifically has been studied extensively, with thousands of clinical trials, and yet proponents have not been able to demonstrate that acupuncture is effective for any indication, including pain. In short, acupuncture does not work.

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Comments: 24

May 09 2017

More Anti-Vaccine Pseudoscience

ObukhanychAnti-vaccine nonsense is relentless, and spreads through social media like a measles virus in an upscale private California school. Therefore we need frequent skeptical booster shots.

I will usually decide to take on a topic if I see it spreading or if fellow skeptics aren’t sure what the deception is. A story is sending up red flags, but a more expert eye is needed.

Pretty much every word in this headline is wrong or deceptive: Harvard Study Proves Unvaccinated Children Pose No Risk.

First, there is no study. This is not in any way about some new study or research, but simply an article by an anti-vaccine crank, Tetyana Obukhanych. Further, her connection to Harvard seems tenuous and it’s not even clear what her current academic status is. And most importantly, she uses cherry picked, irrelevant, and incorrect information to make her case.

But she appears to be the new darling of the anti-vaccine movement, so let’s take a deeper look. Continue Reading »

Comments: 9

May 08 2017

Vaccinated vs Unvaccinated Survey

vaccine meme1One of the basic skills of critical thinking in our modern society is, first, the realization that not all scientific studies are created equal. Studies range from worthless to rigorous, and not all “studies” are even actual studies, but rather just surveys or reviews of prior research.

Further, it’s helpful to be able to look at a study and evaluate it for basic issues of quality. There will often be technical details that only an expert in the field will recognize, and statistical analysis is a specialty unto itself. But basic research concepts could apply to any study and give you at least an idea of how reliable it is. There are other generic factors as well, such as the quality of the journal in which it was published, the funding source, the history of the researchers, and whether or not the paper was ever retracted. Finally, any individual study needs to be put into the context of the overall literature, and not just cherry-picked.

Vaccinated vs Unvaccinated Study

Recently the anti-vaccine community has been sending around a study on social media that purports to show that vaccinated children have a higher rate of neurodevelopmental disorders (NDD) than unvaccinated children. This contradicts a wealth of prior studies that show that the only health difference between vaccinated and less vaccinated (fewer vaccines and/or given later) is that the less vaccinated children have more infections, especially vaccine-preventable diseases.  Continue Reading »

Comments: 12

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