Category Archives: Science
“imagine a puddle waking up one morning and thinking, ‘This is an interesting world I find myself in, an interesting hole I find myself in, fits me rather neatly, doesn’t it? In fact, it fits me staggeringly well, must have been made to have me in it!’ This is such a powerful idea that as the sun rises in the sky and the air heats up and as, gradually, the puddle gets smaller and smaller, it’s still frantically hanging on to the notion that everything’s going to be all right, because this World was meant to have him in it, was built to have him in it; so the moment he disappears catches him rather by surprise. I think this may be something we need to be on the watch out for.”
I yield to no one in my admiration for Douglas Adams, and admire here in particular his reminder that our place in the Universe may really be rather precarious. However, on this occasion he had been anticipated. Read the rest of this entry
Wishing, as I recall, to evade the scientific consensus on smoking and lung cancer, Yes Minister‘s Jim Hacker turned for advice to his Civil Servant Sir Humphrey Appleby. The conversaton went something like this (I would be glad of a link to the exact transcript):
Sir Humphrey: Say the scientists disagree. Say that more research is needed.
Jim: But I thought the science was settled …
Sir Humphrey: Those scientists are always disagreeing about something, and there is always a need for more research.
Relative dating from sedimentology dates back some 200 years, as beautifully explained here by my friend, field geologist and Anglican priest, Michael Roberts, with illustrations from what he has seen himself, while we have now had absolute radiometric dates for over a century. Index fossils are used only to establish that rocks are the same age, and the way creationists manage to forget this fact is indeed miraculous.
This piece gains added interest because of its first-hand accounts, both of geological exploration, and of attempts to persuade creationists to accept the results.
This incredibly duplicitous meme appeared on my twitter feed today. Fri 13th Jan 2017
Evolution is wrong as it is a circular argument from the age of fossils worked out from evolution
Yes, it is the old chestnut of Young Earthers that the age of rocks is based on a circular argument from evolution. It took me back to 1971 when I made the felicitous mistake of going to L’Abri to sit at the feet of the evangelical guru Francis Schaeffer. I arrived ther all bright-eyed and bushy tailed thinking of all the wondrous things I would learn in the next four weeks. I learnt much but not what I had expected.
On my first morning i was sent to Shaeffer’s son-in-law Udo Middlemann to discuss what I would study. I explained that I was going into the Anglican ministry and had just returned from 3 years working as an…
View original post 1,825 more words
I had the pleasure of hearing Abdus Salam give a talk in Oxford, sometime around 1960. I naïvely asked why a neutron would decay into a proton and electron, rather than an antiproton and positron, and he gently explained to me the concept of baryon number, which I would have known about by that point if I had been paying proper attention to his talk. Both prose and neutron have baryon (heavy particle) number +1, while their antiparticles have baryon number -1. They also have lepton (like particle) number 0, which is why the neutron decays into a proton, and electron, and an antineutrino.
The Washington Post recently ran a story about the late Abdus Salam, a physicist who won the Nobel Prize almost 40 years ago. The piece concerns the politics of naming a building at a Pakistani university in honour of a man from a religious minority background. Salam’s family belonged to the Ahmadiyya community – followers of a Muslim faith deemed heretical by Pakistan’s dominant Sunni Muslims. The religion was formally declared ‘non-Islamic’ by the Pakistani government in 1974. Before the new decree, extremists sometimes attacked and burned Ahmadi businesses, mosques and schools; after the decree, members could be imprisoned for their beliefs. In protest and for safety, Dr Salam moved to London.
Salam from Pakistan
Before leaving Pakistan, Salam had been the chief science advisor to Pakistan’s president, had contributed to theoretical and particle physics, was the founding director of the Space Research Commission (SUPARCO), and had…
View original post 1,235 more words
Creationists argue that historical science is different from, and more uncertain than, present-day observational science. But their choice of examples shows that they themselves don’t really believe this.
The difference between what young earth creationists like to term “operational” or “observational” science and historical science doesn’t have the sharp distinction they like to project to their audience. I was reminded of this recently when I had an opportunity to hear Tommy Mitchell speak at a local Answers in Genesis conference a few weeks ago. One particular talk was entitled: Jurassic Prank: A Dinosaur Tale. In it Mitchell presents the young-earth case that dinosaurs lived with man as recently as a few thousand years ago. The “tale” of course is that scientists have been telling us that dinosaurs died out millions of years before man existed. You could say the punchline to the entire talk was that the public has been punked with regards to the truth about dinosaurs.
There are many lessons to be learned from this talk but I want to focus on one seemingly simple observation that Mitchell makes. Below is a YouTube version…
View original post 1,248 more words
This by my friend the geologist, historian, and Anglican priest Michael Roberts, reminding us that the acceptance and active participation of clergymen and other believers in the emerging sciences of biology and evolution dates back more than three centuries.
If you read many historical studies of Britain in the 19th century, you will read that a major conflict was over science. That claim is overstated. Here is a brief overview.
Geology (Deep Time) and Evolution?
From reading many books on church history, general history or popular science, it is easy conclude that advances in geology in the eighteenth and early nineteenth centuries and then evolution after 1859 had gradually been undermining belief in God as Creator as well as an almost official literal reading of the early part of the book of Genesis. The actuality is rather different.
Genesis 1 from a 1611 copy of the KJV
So often the work of Archbishop James Ussher is cited as the “official” view of the churches. In 1656 he published his Annales Veteris Testamenti (Annals of the Old Testament) which gave the famous date of creation as 4004BC. (Actually, it has…
View original post 1,651 more words
Homage to Jack Chick, (April 13, 1924 – October 23, 2016); repost of How to lie about radiometric dating, evolution, and even nuclear physics
Now that he is dead, let us play Jack Chick the compliment of treating his ideas as seriously as we did when he was alive. I am sure he would not have wished otherwise.
And so, in his memory (he died on Sunday) I am reposting my analysis of one of his pieces that I found particularly interesting [update: Americans United for the Separation of Church and State have also reviewed his life and work, here]:
How to lie about radiometric dating, evolution, and even nuclear physics
Have you heard the one about the live snail with a carbon-14 age of 3000 years? Or the lava erupted in 1800 in Hawaii with a potassium-argon age in the millions? It’s all true, true I tell you. But does this signify a major problem with radiometric dating?
I don’t know who first dug up these examples, but they were popularised by the creationist comic-book writer Jack Chick, in a publication called “Big Daddy”. The first page, available here, shows a well-primed creationist student arguing with a singularly ill-informed biology professor. The professor has been leading such a sheltered life that he’s never met these creationist arguments before. And he doesn’t understand anything about evolution or dating of rocks or embryology or indeed anything else. Surprise! the student wins! A skilled cartoonist, Jack Chick manages to squeeze the largest number of fallacies into the smallest number of words. There is a crib sheet at the end of this post, listing all the fallacies I spotted myself; I just reached double figures but there may be more.
Of course, it doesn’t help that the Professor doesn’t know anything about whale ancestors:
Or that the student is allowed to make the most absurd statements unchallenged, on the basis of a video by Kent Hovind:
But there’s more! At the end of page 1, which is also the end of your free sample I’m afraid, the student converts the Professor by pointing out that no one has ever actually seen gluons:
But fear not; an answer is at hand, in the very next frame:
So Jesus must be the force that holds the atomic nucleus together. Convinced by this reasoning, the Professor accepts Jesus, announces that as a result he can no longer teach evolution, and is sacked.
Jack Chick, by the way, has just published another comic book at the age of 92. In it, a bright young man from a good Christian (i.e. creationist) home is seduced by Satan into believing in evolution, and when we last see him is heading straight for damnation. In the words of one of Satan’s many horned helpers, “Joe trusted evolution, not God, and became a jobless party animal.” And a criminal and a drug addict, and covered himself with tattoos, and died and went to hell. Tragic, and so easily avoidable.
I never managed to get to Page 13 of Big Daddy, which is what we really need; link (if it works for you) here. It didn’t work for me, but you’ll find a description of the contents by someone called Honus at talkorigins, and I’ve seen some of the relevant cartoons reproduced elsewhere. So you can either take Honus’s and my word for it, or go online to Chick Publications and buy 25 copies (minimum purchase) of the tract, which I am not about to do.
The really remarkable thing about the tract is that it actually gives the primary literature references to the results that is discussing. And the briefest perusal of this primary literature will show why the papers that Chick refers to, far from undermining radiometric dating, actually reinforce it.
That snail was not 3000 years old, but that really was its apparent radiocarbon age, because it was exchanging calcium carbonate in its shell with mineral calcium carbonate. And that makes all the difference, so you need to take such features of the environment into account.
Many readers will be familiar with the principle of carbon-14 dating. Carbon-14 decays with a half-life of 5730 years. Nonetheless, the fraction of carbon-14 in the atmosphere stays roughly constant (or did before we started adding to it by nuclear weapons testing, and diluting it with carbon dioxide from fossil fuels). That is because the upper atmosphere is bombarded with cosmic rays, which cause nuclear reactions that convert nitrogen-14 (stable) to carbon-14. Mixing distributes this radiocarbon through the atmosphere, where it is taken up by plants and, in due course, animals. As long as you are alive, you are part of the circulating pool of carbon, but as soon as you die, the carbon-14 in your body starts decaying. Of course, cosmic ray intensity is not really constant over a long period, but we can calibrate carbon-14 dates by comparison with carbon in tree rings (dendrochronology). The tree ring correction is small for most purposes, but matters for things like precise dating of Egyptian dynasties.
The point, of course, is that the carbon in the lettuce being fed to the snails is part of the general pool, but the carbon in calcium carbonate minerals is radiochemically dead, having been out of circulation for a long time. What the paper really showed was that the snail exchanges carbonate in its shell with carbonate from dissolved minerals, giving a spurious depletion of radiocarbon in the snail. You will find the story in Science, 1963, p. 637 (paywall, sorry, but summary here).
What about these rocks in Hawaii? Here again the paper is behind a pay wall, but if you follow this link it will take you to the title and abstract, which is all you need. In fact, the title alone is all you need: “Radiogenic helium and argon in ultramafic inclusions from Hawaii”. Inclusions. And in case that’s not clear enough, the abstract tells you that the work is all about the dating of xenoliths. Xeno- foreign, as in xenophobia; lith rock, as in monolith. Look at the paper in more detail, if you can get access to it, and you will find that the excess argon is only found in bubbles of fluid within the rock, that bits of rock that aren’t bubbly don’t show any, and that there is circumstantial evidence that the argon comes from deep within the Earth’s mantle, not radioactive decay in the lava itself.
Anomalies happen all the time in geology. They are, in the original sense of the expression, exceptions that prove the rule; if there were no rule, we would not consider them exceptional. Uranium-lead and potassium-argon dates of rocks usually agree, but not if the rock has been so strongly heated that argon gas can escape. Whole rock dates can be misleading, as in the example of the Hawaiian volcano, if the rock has been contaminated from some source, in this case fluid from the mantle. So far from undermining the method, these anomalies add further information about the sample. In much the same way, radiocarbon dates will be anomalous if some of the carbon comes from inorganic sources, as in the case discussed above, and the anomaly might even be used to tell us something about the specimen’s history and diet.
Now here’s the bit that I really don’t understand. What is going on in Jack Chick’s mind, when he gives us this stuff? I assume that he is an honest person of goodwill, who is doing his best. He really believes that because I and most readers here accept the fact of evolution, we are going to be punished in hell for ever. Being a kindly man, he really doesn’t want that to happen, so he is doing his very best to convince us of the error of our ways.
So why does he do it by pointing us towards papers that say the very opposite of what he says they say? I can only speculate that this is the result of what psychologists call confirmation bias, which leads to interpreting new information, however perversely, in a way that supports what you already think. And when we come to creationism, the motivation for bias is extreme. Remember that we are talking about people who really believe (a) that if you don’t accept salvation through Jesus you are going to go to hell, and (b) that the doctrine of salvation through Jesus only makes sense if the biblical Fall is a historical fact. The papers I’ve mentioned above show that under certain rather special circumstances, radiometric dating will give you the wrong answer unless you take those circumstances into account. Young Earth creationists, knowing that their entire worldview depends on refuting radiometric dating, pounce on these examples as evidence that the method is unreliable. Which of course it is, if you don’t do it right. So what?
All of which gives me uncomfortable pause for two reasons. If creationists are so blinded by confirmation bias, what hope is there of reasoning with them? And if I see my intellectual opponents displaying confirmation bias, completely oblivious to what they are doing, what makes me think that I am any different?
h/t Sensuous Curmudgeon for tip-off about Jack Chick’s latest. Whale ancestors illustrated (Ambulocetus and Pakicetus) copyright JGM Thewissen; may be reproduced for non-commercial educational purposes.
Crib sheet: Definition as obfuscation. Misdefinition of science to exclude all indirect inference (although even Young Earth creationists accept the fact of an Ice Age on geological evidence). Macroevolution, if the word means anything, means major change, and this takes more time than we have been watching. So of course we’ve never seen it. Similar fossils do indeed imply similar ages, but the order of these ages has been known for nearly 200 years on the basis of stratigraphy, and absolute ages established for over 100 years now by radiometric dating. Polystrate fossils were explained in 1868; the explanation is much the same today. New Scientist really did point out in 1997 that it is silly to carry on using Haeckel’s highly questionable drawings, as some still do, when we now have a much more detailed information. But, as explained in Alice Roberts’s Incredible Unlikeliness of Being and many other places, the gill folds on the human embryo really are homologous to the folds on that of a fish. They just develop rather differently, explaining such oddities as the tortuous path of our vagus nerves. As for the whale’s pelvis having “nothing to do with walking on land”, by 1999 we already had extensive series of fossils linking whales to their terrestrial ancestors; there is an excellent review here by one of the scientists involved in Evolution Education and Outreach (free download), and whales evolution also features in an excellent video here . The development of secondary functions (exaptation) is commonplace. Thus mammals’ ear bones are vestigial relics of reptiles’ rear jawbones. Creationists often argue, as here, that natural selection can only remove, and not add. This riddle was solved 120 years ago, with the discovery of mutation. Mutations supply novelty; selection winnows it. Creationists agree in explaining away pre-modern human fossils, such as Lucy and numerous others already known by 1999, as being either apes, or humans. Unfortunately, they can never agree on which is which. And, something that I think believers in particular should find offensive, the theological absurdities of the final frame.
This post originally appeared here in January, at https://paulbraterman.wordpress.com/2016/01/08/how-to-lie-about-radiometric-dating-evolution-and-even-nuclear-physics/
Part 1 of this series, “Atoms Old and New: Atoms in Antiquity” can be read here.
The transition to modern thinking
“It seems probable to me, that God in the beginning formed matter in solid, massy, hard, impenetrable, movable particles… even so very hard, as never to wear or break in pieces; no ordinary power being able to divide what God Himself made one in the first creation.” So wrote Sir Isaac Newton in his 1704 work, Opticks. Apart from the reference to God, there is nothing here that Democritus would have disagreed with. There is, however, very little that the present-day scientist would fully accept. In this and later posts, I discuss how atoms reemerged as fundamental particles, only to be exposed, in their turn, as less than fundamental.
The scientific revolution and the revival of corpuscular theory – 1543–1687
Young Earth Creationism is not just a belief, but proof of allegiance to a very special group, the Real Christians (or, I now fear, Real Jews or Real Muslims). Once a belief assumes this function, rational criticism is counter-effective.
(Of course you and I, dear reader, are not as others are, and would never allow our allegiances to shape our beliefs.)
It baffles many people whether Christian or not why some Christians are Young Earth Creationist, with a belief in a 10,000 year old earth and rejection of evolution. It cannot be denied that Young Earth Creationism has caused bad relationships among Christians, influenced education and results in much mockery from some. A major reason for the friction is that YEC’s claim explicitly or implicitly that the majority of Christians who accept modern science with the vast age of the earth and evolution are at best naughty or heretical Christians.
With YEC making inroads into churches (including the Church of England) and trying to call the shots over education in all parts of the world, it is best to know what they believe and why they do as they go against all scientific teaching and what most churches actually believe.
WHAT YOUNG EARTH CREATIONISM IS;
As YEC attracted so much more heat than…
View original post 832 more words