Showing posts with label creationism. Show all posts
Showing posts with label creationism. Show all posts

Friday, June 8, 2012

Shooting fish in a barrel with a gatling gun

A billboard for Kenny Ham's creationist fantasyland in Kentucky, USA was shared by Hemant Mehta on Twitter yesterday. It's an easy target, but one I can't resist. After all, while we do share some rather derpy dinosaurs in our Vintage Dinosaur Art posts, we typically try to be fair.

But we don't have to be fair to this! Click to brachio-size.

I'm pretty disappointed. I hold Hambone to a high standard, and this just doesn't cut it. I mean... the features that make Brachiosaurus recognizable as Brachiosaurus just aren't there: the distinctly macronarian noggin, the notably longer forelimbs than hindlimbs. They've given this poor beast a set of human-like teeth, and just look at those feet! Ghastly. They couldn't be bothered to look at even a poor illustration, let alone any of the decent ones that are freely available.

I mean, even this LEGO model looks pretty much like Brachiosaurus...

Brachiosaurus
[Hewkii9]

...as does this origami version.

Simple Brachiosaurus
[Juston]

For crying out loud, this is more recognizable as Brachiosaurus!

Brachiosaurus / Preschool Art
[Geoffrey Kehrig]

Really, I'm relieved that Hambone isn't able to hire someone with the chops to accurately illustrate Brachiosaurus.

Now, send some traffic these folks' way...
NCSE
Panda's Thumb
Understanding Evolution
Stupid Dinosaur Lies

And if you're ever tempted to visit his little sideshow in Kentucky, be a dear and donate double the entrance fee to an organization that defends our responsibility to teach evolution in science classrooms.

Wednesday, February 1, 2012

An update from Indiana

Yes, more about my home state's current flirtation with muddying its science classrooms with creationist teaching. This post will serve as an update about the SB 89's progress as well as a clarification on an amendment which has been somewhat misinterpreted in the blogosphere.

Square web graphic

SB 89 passed, with 28 of 50 state senators agreeing with sponsor Dennis Kruse that our school districts should have the option to require the teaching of competing theories of the origin of life to counterbalance those offered by science (video of the short proceedings available here). I especially appreciated the impassioned arguments of Sen. Karen Tallian, who kicked royal ass. It was personal to her, and it was affecting to hear her stand up for the constitution. "I can't even believe we're even considering this," she said. "We made this decision more than 200 years ago. I speak for the Constitution, and the Constitution sheds a tear today that we're even talking about this."

This does not constitute a law, not yet. As the NCSE reports in the above-linked story, "The bill now proceeds to the Indiana House of Representatives, where its sponsors are Jeff Thompson (R-District 28) and Eric Turner (R-District 32), who is also the house speaker pro tem."

This is idiotic, wasteful legislation. It's depressing that it was proposed, considered, and passed.

Before the bill came up for vote, it was amended by my own state senator, Vi Simpson. It states that the "curriculum for the course must include theories from multiple religions, which may include, but is not limited to, Christianity, Judaism, Islam, Hinduism, Buddhism, and Scientology." This is indeed part of the bill now moving to the House. Various folks around the web, uninformed of the amendment's intention, have interpreted it as another example of the bill's stupidity. At Pharyngula, PZ Myers aims his scorn at Simpson's language in particular, writing that "They really don’t get it. None of them are science, and they shouldn’t be taught as if they were." PZ (and the creator of the cartoon included) is missing the point; this wasn't meant to improve the bill, make it more legally palatable, or soothe offended parties. It was intended to torpedo the bill. I have yet to hear back from Simpson regarding her intention, so this is nothing more than an educated guess based on her track record.

Here's the rub: even if PZ and others are missing the intention of the amendment, they're not missing its ultimate effect. Though I was tickled by the effort - and hearing Kruse include Scientology in the array of creation stories that may be taught was pretty funny - the fundies called Simpson's bluff. They know too well that there is only one creation story any school district in Indiana is going to favor in its curriculum. As Kruse himself admitted in regards to the amendment, "It wasn't something I initiated and I wanted, but it does open the door I think for the potential of allowing all religious views to be taught. To make it so it might stand up even better in a court challenge". Mr. Kruse: RELIGIOUS VIEWS DO NOT BELONG IN SCIENCE CLASSROOMS. Also, a middle finger held aloft to you for taking for granted the work of generations of scientists who make your comfortable American life possible.

Imagine being an upright science teacher put in such a position. What's next? Shall we dispense with the germ theory of disease? I mean, it's but one possible explanation for sickness, and perhaps our young children should have the choice to believe that their sniffles and coughs are actually the work of gremlins in Tudor gowns (that's what believe, and I'm highly put off that my views are not represented in our science curricula).

Better yet, imagine a young science teacher looking for a place to teach. What incentive would she have to come to Indiana? The vicious irony of it is that rural districts that would benefit greatly by giving their children a well-rounded science education would be the ones most likely to undermine it by watering down their science classes with lessons in the supernatural.

I also continue to be disappointed by the lack of a truly motivated science communication community in Indiana. Bloomington, in particular. For a research institution, Indiana University seems to have a remarkably passive community of scientists. The single post about SB 89 on the Facebook page of the Hoosier Association of Science Teachers garnered a single comment. One. Maybe I'm wrong about science teachers in these districts. Maybe it's not a big deal. Or maybe I'm just not looking in the right places or tuning to the right channels. If so - and I truly hope so - correct me. If you're an Indiana scientist or science communicator who is active on the web, let me know and I'll follow you (as well as the legion of others like you who must be hiding somewhere).

Thursday, January 26, 2012

Indiana's new state flag

UPDATED! Tweaked my first design, added a second.

UPDATED AGAIN! Using this as a landing page for my efforts to spread the word, so added context.

I've designed two posters to help fight creationism in Indiana schools, after our state senate's "Committee on Education and Career Development" voted to let Senate Bill 89 through (Marc and I have already posted twice about the issue). Forgive the intrusion of this issue here. It's much broader in scope than our usual subject matter here, but I think I speak for both Marc and myself when I say that the reason we write about dinosaurs is that we're passionate about science, reason, and the educated appreciation of nature. So not to use this platform would be wrong. If this doesn't interest you, feel free to disregard it; we'll not be turning this into an Evolution Vs. Creationism blog, and all things saurian will continue to rule here. Anyhow.

The first poster is a play on our state flag - in case you're not familiar with it, there's supposed to be a flame on that torch.

Indiana's Alternate Flag

The second is a cheeky travel poster. I flipped the state upside down. How clever!

Ignorant Indiana Poster - Final Version
These are web versions, but I've got them ready to go at 300dpi, 11" x 17" in TIF or PSD. Available at request. Please share to your heart's content.

I feel really crummy that this has gotten this far. I've been so swamped with school, work, and family life that I haven't really stayed abreast of the issue, except to read NCSE's updates and RT them. I doubt I have the eloquence or poise to make a convincing argument to any elected official. Or a fellow citizen, for that matter. But luckily it's not all in my hands. NCSE reports that these fine people have spoken up for our childrens' education:
John Staver, professor of chemistry and science education at Purdue University; Chuck Little, executive director of the Indiana Urban Schools Association; David Sklar, the Director of Government Relations for the Jewish Community Relations Council; the Reverend Charles Allen, a chaplain for Grace Unlimited, a campus ministry in the Indianapolis area; and Reba Boyd Wooden, executive director of the Indiana Center for Inquiry.

I admit to a feeling of despair that their words didn't persuade the seven Republicans and one Democrat who voted this through the so-called "Committee on Education and Career Development" in the State Senate.

But that's as far as it's going. SCIENCE THROWDOWN. For more, please do keep up with the National Center for Science Education, who does excellent work to protect our intellectual future.

Indiana's new state motto

I've got a new state motto for the good ol' Hoosier state, which I've called home since I was born.


Seems about right. Seriously.

I am an Indiana citizen, and Creationism is bullshit.

Wednesday, June 15, 2011

Goertzen's Case for the Historical Scaphognathus

In the first half of this post, I wrote about the shaky relationship between cryptozoological research and science, as well as the way creationism worms its way into the equation. I also introduced John Goertzen's paper The Rhamphorhynchoid Pterosaur Scaphognathus crassirostris: A "Living Fossil" Until the 17th Century. Today, we'll dig into it and look at the evidence presented.

First, a summary of what we know about Scaphognathus. A denizen of Late Jurassic Germany, it was a small pterosaur of the family Rhamphorhynchidae. The Pterosaur Database writes,
Three near complete specimens have been preserves [sic] along with some fragmentary remains, almost exclusively from the Solnhofen Limestone of Bavaria. Typically, this species had a skull length close to 12cm and a wingspan of about 90cm. A characteristically broad jaw, relatively short tail and short wings in comparison to other rhamphorhynchoids and a broad sternum.[PDF]
For those allergic to the metric system, the wingspan came to about three feet, making the animal about the size of your average hawk. The head was about four inches long. It's highly likely that Scaphognathus bore a covering of the hair-like structures called pycnofibers, as the closely related Sordes has been found to possess them (and it's likely that all pterosaurs did). Like their cousins the dinosaurs, where pterosaurs were once believed to have been lizard-like creatures, new discoveries and technological advancements have revealed them to be unique creatures not like anything that we share the Earth with today.

Scaphognathus crassirostris Holotype, 1831
The S. crassirostris holotype. From my Flickr set dedicated to the beastie.

I made my best effort to read Goertzen's paper objectively, but this isn't entirely possible. His claim has little prior plausibility, and therefore he has a higher mountain to climb than someone who makes a claim that doesn't contradict centuries of well-supported scientific evidence. The major failing of most cryptozoological claims is that the evidence is weak, relying too heavily on personal accounts. A good story can be intriguing, but this doesn't amount to evidence. Knowing that the writer's goal is to demonstrate the existence of  pterosaurs during human history based on artifacts and ancient writings, a stiff dollop of skepticism is warranted and outright cynicism is understandable. Unfortunately, Goertzen stumbles at the very outset. After a brief description of the two fossils of Scaphognathus, he writes,
Because the S. is the only rhamphorhynchoid pterosaur with a head crest, ancient artifacts enable us to tell what the soft tissue of the head crest looked like and identify ancient S. representations with a high degree of confidence.
Despite putting on a crisp white lab coat labeled "scientist" in the paper's opening, he's just given up all pretense to rational thought. It's irresponsible to imply that the head crest of Scaphognathus has been confirmed beyond a shadow of a doubt. It hasn't. As Palaeocritti's page on the pterosaur states, there "is no direct evidence of a crest like the one shown on the illustration below, and this is merely inferred from the presence of a flange of bone above the anterior portion of the rostrum which might have supported a fleshy crest," similarly stated in Buffetaut and Mazin's Evolution and Palaeobiology of Pterosaurs. The Dmitri Bogdanov illustration shared at Palaeocritti is included below for reference.


Illustration by Dmitri Bogdanov, via Wikipedia.

But I'm willing to give Goertzen space and allow that if a line of rhamphorynchoid pterosaurs survived the end-Jurassic extinction, and then the K-Pg extinction, some of them may have evolved a head crest or whatever other bodily adornments folks want to find in the archaeological and historical record. Those pterosaurs may have survived the intervening 65 million years. And over all of that time, by chance they may have avoided preservation in the known fossil record. Their habitat preferences may have changed so they became isolated in areas that aren't likely to lead to fossilization. It's a lot of if's and maybe's to build on, but it's not completely out of the realm of possibility. However, my charity is probably misplaced. Goertzen writes (all emphasis his),
I need to stress that the methodology of Paleocryptozoology is not necessarily to find artifacts that look like modern reconstructions of scientists based on fossils. Indeed, that may be helpful and there may be some accuracy with some of the scientific reconstructions. However, the best method for success is to search for distinct morphological features that are difficult to explain by any other means than that a particular fossil species was observed and accurately described or depicted by its witnesses. An example of a distinct morphological feature is the tail vane of some rhamphorhynchoid pterosaurs. Also, it could be a distinctive skull like that of a Dimorphodon. ...For the S., the distinctive feature is a rhamphorhynchoid pterosaur with a head crest. The S. is the only long-tailed pterosaur presently known from the fossil record with that feature. That will be examined in the present study.
I can clear a wider path for Goertzen, but he's already committed to a pretty narrow one. He sees a crested Scaphognathus in all sorts of odd places, including both written accounts and visual representations on seals, coins, and maps. Beyond a basic description of a reptilian creature with wings and a head crest (with no pycnofibers, it must be noted), the descriptions and drawings vary so widely that only wishful thinking can cobble them into a single, consistent creature. Of course, this is the sort of thing a biblical literalist is adept at.

The Coins and the Egyptian Seal
Goertzen sees crude images of Scaphognathus on a Roman coin, but the  image provided is so low resolution, it's as if he's trying to make the reader work to make out a pterosaurian form in the squiggles and blotches. Luckily, over the years better versions have been made available, such as the one on page 181 of Wayne Sayles' Ancient Coin Collecting IV. The two serpents pulling a chariot sure don't look like Scaphognathus to me. He correctly identifies the driver of the chariot as Triptolemus, a mythological figure. Certainly, this mythological figure might employ steeds with an similar founding in mythology? Or is it more likely that the ancients employed a hawk-sized pterosaur as a draft animal?

On a 1622 German coin, a knight on a horse overpowers a creature that looks like a dragon/ griffin half-breed. Again, it's too large for Scaphognathus. And only a feat of imagination can make it resemble one. Worse yet, two plum chances to make a joke about a pterosaur on a coin sail right by Goertzen. Brother, can you spare a Dimorphodon?

The Egyptian seal he provides doesn't fare much better, and the quality of the image is even worse than the Roman coin. Again, there's the problem of the alleged Scaphognathus engaging in an activity it's probably not suited for. This time, hunting a gazelle. A line drawing is supposed to clear up the matter, but's kind of useless. I personally see a hot dog stand, but my worldview doesn't depend on hot dog stands in ancient Rome, so I'll probably not bother with putting up a website devoted to it.

The Maps
Goertzen provides two 15th century maps which supposedly bear illustrations of Scaphognathus, the 1435 Borgia map and the 1457 Genoese map. Dragons aren't exactly unprecedented in ancient maps; and the Wikipedia article linked here includes an inscription that Goertzen omits. Above a dragon in Asia, a Latin inscription states, "Here there are even men who have large four-foot horns, and there are even serpents so large that they could eat an ox whole." Goertzen seems to take ancient historians and other writers at their word, believing their accounts to be reliable. It's not the sturdiest foundation on which to base what claims to be a rigorous academic essay.

The Sketches
The last form of visual record provided are two sketches of dragons. Goertzen relays the story of the dragon of St. Radegonde, "The Grand Goule," which the second of them is supposed to depict. "This had been encountered previously by those who worked in the monastery. and that monster devoured the monks who, too imprudently, approached its privacy." Now, Scaphognathus is large enough to devour monks. There were certainly large pterosaurs. But Scaphognathus wasn't one of them.

The Personal Accounts
In addition to the visual evidence of ancient artists and artisans, Goertzen provides written accounts he claims describe Scaphognathus clearly. Just as the images above didn't do the trick, I'm afraid that I don't find any of this convincing. Remember how valuable anecdotes are as scientific evidence? They aren't, unless paired with something better. Humans are pretty good at exaggeration and mistakes of perception. Here are what his various naturalists, historians, and other observers saw:
  • "...winged serpents, small in size, and various in form, guard the trees that bear frankincense, a great number around each tree. These are the same serpents that invade Egypt..."
  • "...a small serpent, as long as a palm branch, and thick like a small finger. It has a small piece of skin, like a crest, on its head and, in the middle of the back, two scales placed on one side and the other which serve as wings in order to advance more quickly"
  • "...a cruel kind of serpent, not past four feet long and as thick as a man's arm out of whose sides grow wings much like unto gristles"
  • "...Serpents with wings... they had two legs and small wings so that they could scarce fly. The head was little and like to the head of a serpent. Their color was bright and they were without hair or feathers..."
  • "...winged and flying serpents that can be found who are venomous, who snort, and are savage and kill with pain worse than fire..."
  • "...serpents who are very degenerate and, just as it becomes evening, they fly rising over the land, and rest on the end of their tail, rapidly going into motion."
Even if all of the accounts were consistent - which, despite Goertzen's insistence, they are not - it's more parsimonious to guess that an extant animal explains the sightings of "flying reptiles," and folk legend accounts for their more fearsome aspects. Intriguing stories, but without some sort of physical remains, we just don't know what these animals, with their diverse behaviors, actually were.

Putting it to rest
As I wrote yesterday, I would flip my lid if a living pterosaur was found to exist, but I have to be acutely skeptical of any hypothesis that a large terrestrial vertebrate known only from fossils has survived into the modern day. The scientific evidence of Earth's deep history is overwhelming, and science has established itself as the most reliable way we have to understand the world around us. While people who don't like what science reveals about the world paint it as nothing more than an alternate religion, science does not rely upon faith. What opponents of science brand as faith is actually trust: trust earned by scientists working within a refined system of rational inquiry, strengthened by competition between researchers with differing hypotheses, manifest in technology. What Goertzen's up to here... it's not science.

As someone who does not believe that faith is a path to truth, I find it difficult to don the shoes of a young-earther. If these dragons are supposed to have been living, breathing animals, are we to assume that every mythological creature the thinking ape has invented once walked the Earth, swam the seas, or terrorized the skies? What kind of soul-sucking enterprise is that? Excuse the hyperbole, but in my opinion it's a form of self-hatred, denying humanity its imaginative capacity. Ancient artists and writers are reduced to mere chroniclers of their surroundings, bankrupt of the creativity of invention. As the excellent Bible critic Robert M. Price writes, literalism is a "hollow mockery of the old fundamentalist preaching of the gospel of grace." The sort of literalism Goertzen employs when looking at his "evidence" is, to me, a hollow mockery of mythology. And lest you should be mistaken about whether he's a literalist, read the conclusion of the paper, in which he states that "Pterosaurs were very likely preserved on Noah's ark and survived in Egypt and Europe (and probably elsewhere) until recent times."

It's telling that the title of Goertzen's essay includes the phrase "until the 17th Century," roughly when the age of global exploration and the Enlightenment began. Could it be that the true cause of these cryptids' demise was the clearer vision of the natural world given to us by science? In that case, the last place for the living pterosaur to hide is in the murky fringes of our imaginations.

Massive thanks to Michael Barton, blogger at The Dispersal of Darwin, for helping me access a copy of Adrienne Mayor's Paleocryptozoology: A Call for Collaboration, allowing me to write this.

Tuesday, June 14, 2011

Scaphognathus crassirostris: A Pterosaur in the Historical Record?

Cryptozoology, the study of animals whose existence is not yet proven, has a checkered history when it comes to scientific rigor. While some researchers go about the task with due skepticism, the field also attracts a less reputable element. Some are hoaxers, plain and simple. Some are hopeful believers whose wishes and biases color their perceptions. Some bear a grudge against scientific institutions. Because of all of this, the standing of cryptozoology among scientific disciplines continues to be a heated topic.

The prominence of the Mesozoic bestiary in the popular imagination has naturally spawned legends of extant dinosaurs and pterosaurs. On the dinosaur side of the archosaur family, the Mokele-Mbembe is alleged to be a sauropod who lives in the Congo River basin. Playing for Team Pterosaur is the Ropen of Papua New Guinea. These stories are then seized upon by creationists in efforts to show that the history of life on Earth as reckoned by science is wrong.

One of my favorite venues for responsible discussion about cryptozoology is the Skeptic Magazine podcast MonsterTalk, hosted by Blake Smith with co-hosts Ben Radford, and Dr. Karen StollznowDr Darren Naish joined them for a 2010 episode to share his perspective on the subject of today's post, extant pterosaurs. Speaking about how he and his fellow paleontologists often find themselves on the "front line" of the creationist attack on science, Naish describes a typical encounter with a creationist. Considering paleontology to be an easy target, they'll begin by discussing reconstructions of dinosaurs, springboarding to pick apart perceived weaknesses in the scientific conception of the geological history of the Earth, evolution, and cosmology. This bears out in the creationist museums, which sidestep the overwhelming evolutionary evidence presented by, say, genetics, instead emphasizing the importance of faith and simplistic dioramas of dinosaurs and humans living together. These are designed to play off our inherent difficulty in grappling with deep time: "Millions of years? Get out of here!"

By offering a story in which long-extinct creatures exist during recorded history, cryptozoology is seen to be a sword that finds the chinks in paleontology's armor. In another episode of MonsterTalk from 2009, Dr. David Martill puts it well: "Even if a pterosaur did [survive the K-Pg extinction], it wouldn't alter a jot our perceptions about evolution, or the age of the earth, or any of our scientific philosophies that paleontology has helped develop." There's never been a clear justification for how a "living fossil" undermines the theory of evolution, but still, some creationists seem to be obsessed with this false dilemma.

To wit: The Rhamphorhynchoid Pterosaur Scaphognathus crassirostris: A "Living Fossil" Until the 17th Century, written by John Goertzen with the intention of discrediting evolutionary theory. A recent post in the Vintage Dinosaur Art series dealt with the evolving representations of Scaphognathus, which I described as being somewhat less than notable, as pterosaurs go. I ran across this paper while putting together the post, and I couldn't resist digging into it and seeing the evidence presented. Before that, though, it's probably a good idea to lay out the materials from which Goertzen's argument is built.

The inspiration for Goertzen's paper is a discipline proposed by Adrienne Mayor in an article titled Paleocryptozoology: A Call for Collaboration, published in the journal Cryptozoology in 1989. Mayor is a Research Scholar in Classics and History of Science, described on her university homepage as "an independent folklorist/historian of science who investigates natural knowledge contained in pre-scientific myths and oral traditions." In books such as The First Fossil Hunters, she explores how the bizarre forms of fossils have been studied by ancient civilizations, often being woven into the fabric of the cultures' mythologies (I touched on her ideas in an early post here). There isn't a whiff of creationism in the paleocryptozoology article, so she's hardly to blame for the inevitable hijacking of her term for anti-evolution writings. Aiming to broaden rigorous methods of cryptozoological inquiry and build a bridge between cryptozoologists and classicists, Mayor proposes that some animals we dub "cryptids" might appear in the historical record. Therefore, it may benefit both groups to compile the "scattered and sometimes obscure evidence into one accessible resource." Mayor explains the point of this resource as such:
Working with specialists in other disciplines, paleocryptozoologists could integrate the artistic record with the ancient texts and the modern excavation techniques to determine (1) whether individual or combined features from prehistoric fossils were used as models, or (2) whether "living fossils" might have been observed in historical times.
For a creationist looking to crow about the false dilemma of the living fossil, this paper opens a whole new field to focus on.

The Goertzen paper that inspired this post, as well as other writings of his, appear on a site called "Revolution Against Evolution," so it's a good example of cryptozoology as a weapon in the creationist arsenal. Creationists would do well to realize that a lie (more charitably, a mistake) doesn't become true with repetition. Darwin's theory of evolution by natural selection does not depend on the fossil record, and the more fully fleshed out modern evolutionary theory certainly doesn't. Either evolution deniers understand the science poorly, or they deliberately misrepresent it. Neither option is commendable.

Despite all of the noise surrounding this issue, I have to admit: if given my choice of pseudosciences to grant credibility, I'd be tempted to pick this one (though the potential global benefits of free energy would tug at my altruistic streak). It's in this spirit that I weigh stories of cryptids: hopeful that they might be factual, but bound by the tried-and-true, hard-won methods of science and discouraged by a long history of shabby evidence. Tomorrow, in the second half of this post, we'll get into the nitty gritty of this article and see if Goertzen presents compelling evidence to support the hypothesis that Scaphognathus crassirostris survived long enough for observations of it to have been recorded during human history.


Is this Zdeněk Burian painting plausible after all?
at_sea_by_zdenek_burian
Painting by Zdeněk Burian. Shared by Better than Bad at Flickr.

Wednesday, March 2, 2011

Pareidoliasaurus, a new sauropodomorph of Utah

"Until now that claim has gone unchallenged."

So write Phil Senter and Sally J. Cole, coauthors of a newly published paper in Palaeontologia Electronica examining the purported dinosaur petroglyphs of Kachina Bridge, a rock formation in Utah's Natural Bridges National Monument. While folks have criticized the attempts of Young Earth Creationists to use these and other ancient markings of indigenous people as evidence of humanity's coexistence with dinosaurs - visit Stupid Dinosaur Lies to see a comparison of different images they've used in this particular case - it's now been addressed in the scientific literature. Analyzing the markings under a variety of lighting conditions, Senter and Cole were able to discern that what seemed to be superficially resemble a generic sauropod was actually an amalgam of deliberate ancient markings and natural variations in color on the rock.


From Senter and Cole's "Dinosaur" petroglyphs at Kachina Bridge site, Natural Bridges National Monument, southeastern Utah: not dinosaurs after all.

In their discussion section, Senter and Cole write of pareidolia, "the psychological phenomenon of perceiving significance in vague or random stimuli, e.g., seeing animals in clouds or the face of a religious figure in a food item. The results of this investigation indicate that the dinosaurs of Kachina Bridge are examples of this phenomenon and exist only as pareidolic illusions." This is one of the great perceptual hurdles we must leap in our attempt to accurately perceive our world. It happens to all of us. It's happened to me. In the latest episode of Point of Inquiry, Neil DeGrasse Tyson makes the point that science is essentially a tool to protect our observations from the biases and failings of our brains. One of these failings is our zeal for pattern-recognizing. Drop the Mentos candy of pareidolia into the Diet Coke of ideology and stand back.

While this study could be seen as just a bit of housecleaning to dispense with yet another creationist claim, it perfectly illustrates the power of science to allow us to observe that which fools the eye. It demonstrates that science is about the willingness to admit our physical limitations, to go beyond the superficial and rigorously analyze that which seems obvious. Creationists don't do this. They don't attempt to test and strengthen their arguments by poking holes in them. Any creationist proclaiming Kachina Bridge as evidence for a young Earth could have done exactly what Senter and Cole did; their methods were not beyond the capabilities of anyone with the time and will to try. But none did, because the truth of the claim wasn't their concern. And that says everything.

It also must be said that if you look at the alleged sauropod, it doesn't quite match our understanding of the real animals' physiology. If the Kachina Bridge petroglyph was the work of an ancient artist who had actually had seen a sauropod, it would have sported a horribly broken tail. On a more basic level, I'd imagine that had any early artists actually shared their environments with dinosaurs, their depictions in petroglyphs would be so widespread that the creationists would have no trouble finding abundant evidence for their claims. Bison and aurochs and horses are really cool animals, but if I was a guy in a cave with a bit of ochre paint, I'd personally be more interested in populating the stone walls with the titanic saurian beasts that dwarfed them. Then again, who am I to make assumptions about the priorities of ancient artists?

Friday, October 22, 2010

Vintage Dinosaur Art: The Gishosaurs

I rarely deal with creationism outright on this blog, but I couldn't resist taking a look at today's entry in the Vintage Dinosaur Art series: Dinosaurs by Design by Duane T. Gish, illustrated by Earl and Bonita Snellenberger. The title was shared on Flickr by Michael Barton, who also covered it on his fanflippintastic blog The Dispersal of Darwin. When Michael ran across this title at a secondhand store in the midst of shopping for books for his young son, he did the world a favor by taking at least this one copy out of circulation.

'Dinosaurs by Design' by Duane T. Gish

The artwork itself isn't half bad, veering more towards the cartoonish end of the illustration spectrum. Dispensing with the work done during the first half of the dinosaur renaissance, the dinosaurs are all depicted as scaly, thoroughly reptilian creatures (unless you count birds as dinosaurs). As Gish's ideas are cartoons themselves, this approach is altogether fitting. For instance, the following page reveals the "deep, dark secret" that scientists don't have any pterosaur ancestors as evidence of evolution's wrongy-wrongness. The mascot of this is a sort of half-dinosaur, half-pterosaur bastard of a Wuzzle. I hesitate to use the word "guarantee," especially in a science like paleontology, but I guaran-damn-tee that the lineage leading to the pterosaurs didn't concoct anything like this Mesozoic straw man. Gish's house is probably populated by a great horde of straw men. He's probably never lonely.

'Dinosaurs by Design' by Duane T. Gish

Maybe we'll never find a nice lineage of proto-pterosaurs (if that sort of thing is your bag, I'll point you in the direction of Mr. Ed). This could be for many reasons. Maybe they evolved in upland areas where fossilization was rare. Who knows? No one ever will if we just stop looking. But rest assured that the theory of evolution does not rest on the thin hope of finding every extinct creature.

Next we have a dromaeosaur who, considering the fall of Man, has taken up carnivory. Interesting how one person's choice can lead to such widespread gustatory upheaval. Here, she munches on a gazelle bone as a Biblical version of Muldoon walks by in the background, unaware. Clever girl, indeed.
'Dinosaurs by Design' by Duane T. Gish

The book also deals with the Great Flood, AKA the Dinosaur Killer. The geological evidence against this doesn't simply make more sense. It's laughably overwhelming. It's like arguing that beef makes a better burger than cabbage. The flood is a perfect example of an idea that's so wrong it's not even wrong. Mind you, the foundations of the modern science of geology were laid by scientists who were firm Christians. This isn't some atheist fairy tale; it's a body of knowledge built by rigorous minds impartially weighing and arguing the evidence. In this way, science forges robust theories of how nature works. People aren't perfect, so science can't be, either. But it's a remarkably dextrous way of describing the world, constantly open to revision to fit observations made possible by new technology. The constant back and forth of science, cherry-picked by creationists as evidence of discord or corruption is a strength of science, not a weakness.
'Dinosaurs by Design' by Duane T. Gish

'Dinosaurs by Design' by Duane T. Gish

I hope you're prepared for the next one, because it is absolutely freakin' awesome. Last year's Discovery Channel series Clash of the Dinosaurs briefly discusses the unsupported idea that lambeosaurine hadrosaurs like Parasaurolophus might have used subsonic waves to deter predators. A wild hypothesis, to be sure, but nothing compared to Gish's flame-throwing Parasaurolophus.

'Dinosaurs by Design' by Duane T. Gish

Gish gussies it up with sciency phrases like "defense mechanism," and compares this to the chemical weaponry of bombardier beetles. Full speed ahead and damn plausibility! Gish writes:
God has given many animals living today very specialized and effective defense capabilities that have nothing to do with teeth or claws. If the fossil skeletons of a skunk, porcupine, or electric eel were dug up by a scientist who had never seen a living animal, would he have any idea that these animals had unique defense mechanisms?
Ah, yes. Parasaurolophus breathed fire because... there's no evidence for it. How else are we to read this? Parsimony, Duane.*

Gish is the master of a debating tactic which has come to be known by his name: the Gish Gallop. Using this technique, creationist debaters spit out such a flurry of nonsense mixed with jargony words and Biblical references that the opponent realizes that it's an impossible task to answer them all, and thus appears to be hammered by truth. The reason this works is that science wears restraints that creationism doesn't: facts. Science can't just adhere to attractive ideas. It has to examine them critically and build a body of knowledge out of repeatable observations and logical deductions. It's not perfect, but science holds itself accountable. The creationist isn't so shackled.

This is how ideas like the fire-breathing Parasaurolophus pop up. Creationist debaters know that science delivers the goods, and has earned, generally speaking, a good reputation. Thus, as they attempt to derail science, they try to sound as much like it as possible. If you're going to say that Leviathan was a dinosaur, fine. Just say it was T. rex, the one your audience is guaranteed to know about, and be done with it. It's just as likely as Parasaurolophus, whose nasal ornamentation offers no additional support for such an absurd "defense mechanism."

In other words, admit that you've made a choice to set aside a scientific worldview (less charitably, to believe in magic) and stop forcing dinosaurs to play this ridiculous role of shoring up your mythology.

Snap!

* Regarding porcupines: in the right conditions, it is fully plausible that porcupine quills would be recorded in the fossil record, which we know is so much more than bones and claws. Advances in technology have opened up all kinds of exciting new avenues of inquiry. Granted, this book was written before the avalanche of feathered dinosaurs came out of China - you know, those supposedly imaginary "transitional forms" between small theropods and birds.

Update: Check out the comments below to links for the Stupid Dinosaur Lies posts on this title and others. Also added excerpt from the book on Michael Barton's kind suggestion.