Showing posts with label Intelligent Design. Show all posts
Showing posts with label Intelligent Design. Show all posts

Saturday, March 9, 2013

Providing evidence for evolution | Skeptoid

Providing evidence for evolution

Last week I pointed out some common misconceptions about evolution and arguments that  are often used to support creationism. This week I would like to share some of what I feel to be the strongest evidences for evolution. I feel like too often in debates about evolution the focus seems to be on refuting creationism instead of correctly presenting evolution – and the science is really awesome. With the evidence I present here I seek to answer the following questions:
What is the fossil evidence for evolution?
What can we learn about evolution from living animals?
Does evolution present any testable predictions?
What is the fossil evidence for evolution?
One of the common arguments against evolution is “where are the transition fossils”. This is perhaps the weakest of all arguments against evolution. The transition fossils (or casts of the fossils) are available in every reliable natural history museum. Wikipedia has an extensive list of transition fossils. These fossils include the human evolution of Australopithecus to Homo Habilis to Homo Erectus to Homo Sapien. They include evolution of invertebrates to fish. They even include the evolution of insects.
The fossil evidence is extensive, and the argument that we don’t have fossil evidence is tired. Creationists quickly say things like “just show me the transition fossils” or “where is the missing link”, but we actually have quite a bit of fossil evidence. Just this last week Dr. Steven Novella wrote a great article on feathered dinosaurs – an excellent example of transition fossils.
Unfortunately, each time new evidence of this type is presented creationists treat the new fossil like the hydra from greek mythology – finding one transition fossil just creates two new transitions whose fossils haven’t been found yet.
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Wednesday, February 27, 2013

Skepticblog » Junk DNA and creationist lies

Junk DNA and creationist lies

by Donald Prothero, Feb 27 2013 

One of the common tropes you hear among modern creationists is the denial of the idea that there is any non-coding DNA, or “junk DNA.” To them, the idea that a large part of the genome is simply unread leftovers, carried along passively from generation to generation without doing anything, is clearly a contradiction with the idea of an “Intelligent Designer.” So the Discovery Institute and numerous other creationist organizations that are actually sophisticated enough to recognize the issue (including Georgia Purdom of Ken Ham’s “Answers in Genesis” organization) keep spreading propaganda that “junk DNA is a myth” or “every bit of DNA has function, even if we don’t know what it is.” Moonie Jonathan Wells, who has written crummy books misinterpreting fossils and embryology, wrote a whole book denying the subject—even though he hasn’t done any research in molecular biology since 1994. Do they actually do any research to explore this topic, or trying to test the hypothesis that all DNA is functional? No, their labs and their “research” are not that sophisticated. Instead, their entire output on the topic (just as in every other topic) is based on cherry-picking statements of the work of legitimate scientists, quote-mined to distort the meaning of the original scientific publication. Either they don’t understand what they are reading and their confirmation bias filters screen out all but a few words that seem to agree with them, or they are consciously lying and distorting the evidence—or both.
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Wednesday, December 5, 2012

The Top 10 Claims Made by Creationists to Counter Scientific Theories by George Dvorsky

The Top 10 Claims Made by Creationists to Counter Scientific Theories:

One of the most challenging tasks for the modern day creationist to is reconcile the belief in a 6,000 year old Earth with the ever-growing mountain of scientific evidence pointing to a vastly different conclusion — namely a universe that's 13.5 billion years old and an Earth that formed 4.5 billion years ago. So, given these astoundingly dramatic discrepancies, biblical literalists and 'young Earth creationists' have had no choice but to get pretty darned imaginative when brushing science aside. Here are 10 arguments creationists have made to counter scientific theories.

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'via Blog this'

Monday, July 9, 2012

What would disprove evolution? « Why Evolution Is True

"If evolution is a scientific theory worth its salt, then there must be some conceivable observations that could show it to be wrong. I just wanted to put down, for the record, what some of those observations might be. First, let’s reprise what I see as the major components of the theory of evolution."
Read On

Tuesday, May 15, 2012

The “Tornado in a Junkyard” Fallacy via Science-Based Life


As a promoter of science literacy and therefore the theory of evolution, I often get some push back from those who are either unaware of the tenets of the theory, or are straight up opposed to it.
One of the most common arguments is to say that evolution is impossible, because evolving something as complex as the human eye, for example, would be “like a tornado going through a junkyard and creating a 747.” This is meant to imply that creating a complex structure is impossible by chance, and therefore that there had to be some “intelligent design” to the process.
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Stupid Design via Science Based Life

Does our world seem so perfect to you that it had to be created? Was then there some all-powerful designer that created beauty intertwining with complexity, or are we simply ignoring all of the evidence that shows that the universe is certainly not adapted for us? Getting caught up in our sensory interpretations of elegance blinds us from the cold reality of a hostile existence (not intelligently designed or designed for us). When proponents of so-called “intelligent design” make this complexity and beauty argument, they are hopelessly shortsighted in their view of an anthropocentric universe. What we will look at below are facts about the universe, our planet, and about humans that make “intelligent design” or a universe crafted with humans in mind seem nonsensical.
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Tuesday, January 31, 2012

Genesis Weak


Published by Steven Novella under Creationism/ID


I advise you to please turn off your irony meters before reading further or clicking the link to the video I will be discussing today. You may also want to take a couple of deep relaxing breaths to help preserve your neurons from the irrational assault they are about to suffer.


I was recently asked to take a look at Genesis Week with Ian Juby (Wazooloo), a slick YouTube series in which Juby takes us on a mystical journey through the looking glass of creationist nonsense. In his world science and reason are flipped completely upside down. It is, as they say, a “target rich environment” – too rich for any one blog post, so I will pick out a few gems.


The title of this episode is “I’m hooked on a feeling,” referring to new research showing that acceptance of evolution is strongly influenced by a gut “feeling of certainty” that people have about the theory. Juby makes much of this study (without, of course, putting it into any context) concluding that people believe in evolution despite the evidence (what he describes as overwhelming evidence for creation) rather than because of it.


The study itself reviews prior research on this question, summarizing it:


Despite the variety of studies that have been reported, there are no convincingly clear findings about the relationships among knowledge level, beliefs, and acceptance level regarding the theory of evolution. While some studies have provided evidence for a robust relationship between knowledge level and level of acceptance (Paz-y-Miño & Espinosa, 2009; Rutledge & Warden, 1999), others found no evidence of a straightforward relationship (Sinatra et al., 2003), and little evidence that instructional treatments affect acceptance levels (Chinsamy & Plagányi, 2007), even when learning gains have been substantiated (Nehm & Schonfeld, 2007). It has also been suggested that the nature of relationships change when acceptance of evolutionary theory is framed in the context of macroevolution rather than microevolution (Nadelson & Southerland, 2010).


So – it’s complicated. Results of research seem to depend upon how the study was conducted, meaning that confounding variables have not adequately been controlled for so they determine the outcome of individual studies, which therefore have conflicting results.


However, at least so far there does not appear to be a clear relationship between teaching students about evolutionary theory and their acceptance of it. This is actually not surprising and in line with the consensus of psychological research, which shows that people form opinions largely for emotional and ideological reasons, and then cherry pick the facts they need to support those opinions.


The findings of the current study are therefore nothing new, and there is no reason to think that this phenomenon is unique to belief in evolution.


But to put this study into its proper context – this is about affecting the opinions of students by confronting their emotional reactions to evolution. It is not about how scientists form their opinions about evolutionary theory.


This is a common logical error that creationists make – confusing public opinion with expert scientific opinion. Juby tries to make it seem that this study shows that acceptance of evolution in general (including among scientists and educators) is about feeling rather than evidence.


He then goes on to another common claim of creationists that reflects their astounding intellectual dishonesty. He lists a few biologists who are creationists – as if their opinions are evidence based, and contrasting them with the emotion-based acceptance of evolution.


Among scientists, however, >99% accept evolutionary theory – a relevant fact that Juby failed to mention. This is also in line with other research, showing that only at the highest levels of science education do facts trump emotion in forming our beliefs about controversial or emotional topics. Among the experts there is a strong consensus – the evidence overwhelmingly supports the conclusion that all life on earth is related through an evolutionary process. Juby, however, rattles off a couple of creationist exceptions as if they are the rule.


It is hard to imagine that Juby is not aware of these facts. We are left to conclude that he is either living in a creationist bubble or is flagrantly dishonest in dealing with the question of scientific acceptance of evolution.


Eventually Juby gets around to listing some of the alleged overwhelming evidence for creation, including irreducible complexity and lack of a mechanism for increasing genetic information. He lists a bunch of old long-discredited creationist canards, and that is his “overwhelming evidence.”


Creationists proposed the notion of irreducible complexity over a decade ago, and really it was just a reformulation of arguments they have been putting forward for a century and a half – since Darwin proposed his version of evolutionary theory. It has been debated and discussed among scientists, and found to be a fatally flawed idea. It’s flat out wrong – disproved by numerous counter examples. I first wrote about it myself in 1999, and the arguments haven’t changed.


The alleged lack of a mechanism for generating new genetic information is nonsense – not a serious scientific or even philosophical argument. (I first debunked this one in 2002.) The combination of random mutations and selective pressures, combined with gene duplication and other genetic mechanisms, are fully capable of increasing overall genetic information and creating new information.


Creationists like Juby have no counterarguments to the scientific consensus clearly demonstrating that irreducible complexity and creationist abuses of information theory are false. They simply trot out the same discarded claims over and over again with arrogance and casual dismissiveness of the scientific consensus – a consensus slowly built on a mountain of evidence.


I’m not bothered by the fact the people like Juby can promote their nonsense on an open forum like YouTube. He is unlikely to change anyone’s opinion. He also provides yet another opportunity to point out the terrible logic and questionable honesty of the creationists. They do make it easy in that they have nothing new to say. Science changes and new ideas and new evidence are brought to bare. Creationism is stuck in its prescientific conclusion, and continue to rely upon long discredited arguments – even when dressed up in a slick YouTube video.

Tuesday, September 20, 2011

A Simple Rebuttal « Science-Based Life

"Intelligent Design=Creationism

Here is a simple yet solid intelligent design rebuttal that would make any creationist pee a little."
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Saturday, September 10, 2011

Understanding Evolution: 17 Misconceptions and Their Responses « Science-Based Life

"Evolution is one of the best supported, most elegant, and most powerful theories in all of science. As it stands, it is the best explanation that we have for the diversity of life on Earth. Understanding evolution, as a scientifically literate society, is then a primary goal for anyone who was ever at least curious about the various forms of life we encounter. However, because evolutionary facts are thought to step on the toes of modern religious interpretations of life’s diversity (that all humans came from the interbreeding of a family generated from a rib bone, for example), there are many misconceptions that have been thrown in the way to act as obstacles to true understanding."
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Wednesday, September 7, 2011

Skepticblog » Bird Fossils and Clueless Creationists

"About a month ago, there was big publicity about the discovery and description of a new fossil bird from China, Xiaotingia zhengi. It is one of a long line of amazingly preserved bird fossils that have come from Jurassic and Cretaceous beds in Liaoning and other areas in China, and have completely revolutionized our understanding of early bird evolution. "
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Sunday, January 23, 2011

"Teaching the Controversy" is total nonsense.

This is the first I've heard of creationists attempting to push bunk science masquerading as "Intelligent Design" into Ohio's public schools. Since I'm from Cincinnati, this struck me, and I thought it even more interesting because the TalkOrigins web page features an article from the Cincinnati Enquirer in 2002 as emblematic of the creationist perspective, along with details for debunking that nonsense.