In the hierarchy of scientific principles, the scientific consensus – that is, the collective opinion and judgement of scientific experts in a particular field – is an important method to separate real scientific ideas and conclusions from pseudoscience, cargo cult science, and other beliefs.
I often discuss scientific theories which “are large bodies of work that are a culmination or a composite of the products of many contributors over time and are substantiated by vast bodies of converging evidence. They unify and synchronize the scientific community’s view and approach to a particular scientific field.”
A scientific theory is not a wild and arbitrary guess, but it is built upon a foundation of scientific knowledge that itself is based on evidence accumulated from data that resulted from scientific experimentation. A scientific theory is considered to be the highest scientific principle, something that is missed by many science deniers. In addition, a scientific consensus is formed by a similar method – the accumulation of evidence.
I have written frequently about the scientific consensus, because it is one of the most powerful pieces of evidence in a discussion about critical scientific issues of our day – evolution, climate change, vaccines, GMOs, and many areas of biomedical knowledge.
This tome has one goal – to clarify our understanding of the scientific consensus, and how we arrive at it. Through this information, maybe we all can see the power of it in determine what is real science and what are policy and cultural debates.
Continue reading “Scientific consensus – collective opinion of scientists”
On an episode of his HBO political talk show, Real Time with Bill Maher, Maher repeated his contention that the Republican Party, more generally the right wing of the American political spectrum, is the party of science denialism politics.
I am no fan of Bill Maher, because, in fact, he himself is is a science denier. Maher hits some of the top 10 list of science denialism: he’s an anti-vaccine crackpot, he’s pro-alternative medicine, he’s on the verge of AIDS denialism, and, to top it off, he hates GMO foods.
In other words, Maher, a leftist by any stretch of the meaning, embraces science denialism politics in a way that would probably inspire your local climate change or evolution denier on the right.
HBO’s other political news-ish program, Last Week Tonight with John Oliver, features British comedian Oliver, who is pro-science on every issue I’ve heard, including scientific research and vaccines.
Neil deGrasse Tyson was a guest on Maher’s episode, and contradicted him regarding the claim that Republicans hold the monopoly on junk science:
Don’t be too high and mighty there, because there are certain aspects of science denials that are squarely in the liberal left.
I like to generalize about the politics of science denialism politics – I and many others have claimed that the anti-GMO crowd is nothing more than the left’s version of climate change deniers. But some people have taken umbrage with Tyson’s comments, and believe that science denialism cannot be correlated with political beliefs.
One caveat about this article – it is primarily focused on American politics. In many countries, both the left and right accept the consensus on scientific principles like evolution and vaccines. Only in America is science denialism the default position, crossing party boundaries.
Let’s take a look at left vs. right ideas about science, and how each embrace science denialism and pseudoscience. It’s quite a bit more complicated than you can imagine.
Continue reading “Science denialism politics – vaccines, GMOs, evolution, climate change”
There are so many myths and tropes about genetically modified (GMO) foods, much like the vaccine world, it’s sometimes difficult to find out what is based in science, and what is not. Thus, I thought it would be the time to examine the crop modification techniques for GMO vs non-GMO foods.
Not to give away the conclusions early on, but all crops that end up being our food sources are genetically engineered. And have been for 10,000 years, since the dawn of human agriculture. If we hadn’t been genetically engineering our foods from day 1, we’d be eating corn that provided little nutritional value.
Take a look at the evolution of corn from the wild ancestor, teosinte, to the delicious cobs of corn we eat during a summer BBQ – it’s closely tied to human advances in genetic engineering of food crops over the past 10,000 years. Teosinte is barely edible, and the amount of nutrition per plant pales compared to modern corn.
If you want corn that’s never been genetic engineered, then you’ll have to travel through some wild fields in Mexico to find yourself some teosinte. Then harvest a small warehouse of it to feed yourself for a couple of days. But 10,000 years of genetic modification, using a variety of techniques, gave us modern corn.
I know what you’re going to say. No, ancient farmers did not practice genetic modification. They didn’t stick a gene from a walrus into the corn plant – but then again modern genetic modification doesn’t do that either. Time to take a look at various genetic modification techniques used since the dawn of agriculture – let’s see what is the difference between GMO vs non-GMO foods. Continue reading “GMO vs non-GMO foods – genetic modification techniques”
In my writing, I often refer to the scientific consensus, which is the collective opinion and judgement of scientists in a particular field of study. This consensus implies general agreement, though disagreement is limited and generally insignificant.
The major difference between a scientific theory and a scientific consensus is that the theory is essentially fact. It is so predictive, it is supported by so much evidence, and it is so well accepted, it takes an almost ridiculous amount of data to refute it, though it is possible.
In the hierarchy of scientific principles, we often mention scientific theories which “are large bodies of work that are a culmination or a composite of the products of many contributors over time and are substantiated by vast bodies of converging evidence. They unify and synchronize the scientific community’s view and approach to a particular scientific field.” A scientific theory is not a wild and arbitrary guess, but it is built upon a foundation of scientific knowledge that itself is based on evidence accumulated from data that resulted from scientific experimentation.
We want to focus on the scientific consensus, describing what it is. Take a deep breath, because this is a complicated one.
Continue reading “Developing and supporting a scientific consensus”
I disappeared for a few days after the election of a man who espoused racism, xenophobia and misogyny as the reasons to vote for him. His actual policy proposals were threadbare and, if he really believed them, we are looking a historical dismantling of all that is special about the USA. It’s hard to choose what scares me most about this sexual predator’s policies, but the antiscience Donald Trump ranks pretty much at or near the top.
Generally, the Republican party is quite antiscience. Republicans deny climate change. Republicans deny evolution, while Trump’s running mate, Mike Pence, is hypercritical of evolution. And of course, Republicans have shown themselves to be vaccine deniers. There’s a lot more, but many of us consider those topics to be in the top 5 list of science denial. Frankly, if someone said that Trump believed in alien visitations and Sasquatch, and he was sending tax money to investigate them thoroughly, I wouldn’t be surprised.
On a broader level, a Trump administration will probably gut science research by cutting funding to National Institutes of Health and NASA programs in basic scientific research. There are probably areas, where Trump will appoint directors who are opposed to the years of science that form a basis of policy.
Despite the press tacitly being in bed with Trump, never really investigating him, Hillary Clinton won the election based on the popular vote, with a several hundred thousand vote lead over Trump. I think most Americans wanted a President who supported science. Sadly, Trump won the election because the USA uses an antiquated and anachronistic method to actually choose the president. A method that is based on needs of 250 years ago and on the negotiations required to get slave holding states to agree to the new Union. But, I’m not a political scientist, and the arguments for and against the Electoral College system of voting would be far beyond what are topics for this website.
Let’s just look at the antiscience Donald Trump, sticking to the key issues of climate change, evolution, and vaccines.
I admit that I judge politicians on their science credibility. And I’m rather black and white about it – politicians don’t get to pick and choose what science they “believe” or not. How Bernie Sanders views biotechnology seems irresponsible. And that it’s aligned with Republican anti-science viewpoints is unacceptable.
I’ve written previously about Sanders’ nascent anti-science views, especially with complementary and alternative medicine, which isn’t medicine. Although I haven’t written about it specifically, Sanders is in favor of GMO labelling, which is part of the pseudoscience surrounding GMOs. Let’s be clear, the overwhelming scientific consensus about GMOs is that they are safe for human consumption and the environment. To real science, denying GMO safety (and it’s related labeling laws) is no different than denying climate change.
For me, the litmus tests for science in our politicians are evolution, climate change, GMOs, vaccines, and cloning/stem cell research. There are a few other science policy issues that are abeyond the scope of this website – fracking (limited science available at this time) and nuclear power. I haven’t the time or the desire to review the consensus on either, but for many people they are also litmus tests for science credibility of politicians – and not in the way you think it would be.
Recently, a journalist took a look at how Bernie Sanders views biotechnology – especially in comparison to Hillary Clinton. And Sanders comes up short in this key area of science. In fact, he has previously aligned himself with right wing Republicans on some scientific issues, something that should cause any pro-science progressive some pause.
Continue reading “Bernie Sanders views biotechnology – aligned with Republicans”
This article is #3 of the 12 most popular posts on Skeptical Raptor during 2015. This article discusses how science deniers employ false equivalence to create fake debates.
If you read a news article, Google a scientific topic, or watch TV, you’d think that some scientific principles were actually being debated by scientists. The unfiltered information about important scientific subjects allows the science deniers to use a false equivalence to make it appear that the often minority, and scientifically unsupported viewpoint is equivalent to the scientific consensus which is based on huge amounts of published evidence.
From listening to the screaming and yelling, you would think that scientists aren’t sure about evolution, vaccines, global warming, and the age of the earth (or even the age of the universe). There are even those who think there’s a debate that HIV doesn’t cause AIDS. It’s because some news sources think there’s a debate, so bring one person to represent one side, and one for the other, and the person screams the loudest often wins.
Continue reading “Science deniers use false equivalence to create fake debates”
The paleolithic diet myth is the most recent in a long list of food and diet fads that have been debunked by skeptics for years. I’m sure there were paleolithic cavemen skeptics 20,000 years ago who grunted, “this diet sucks.” If they actually ate that diet.
Food fads are so enticing. Eat this to make your immune system strong. Don’t eat that because it causes cancer. But do eat this because it reduces your risk of cancer. Eat this. Don’t eat that. Drink this. Eat more of that.
My thoughts have always been that the human physiology is amazingly resilient, and as long as you have no chronic diseases nor chronic malnutrition, there is nothing one can do that will make the situation much better or much worse.
Yes, maintaining levels of certain nutrients, such as vitamins C and D, iron, and others, are critical, but in the modern world, it’s almost impossible to miss out on those micronutrients. Yes, we should limit fats and “sugars”. But the thing is human physiology is complex, so marathoners eat lots of carbohydrates, and they are mostly healthy. It all depends.
And then there’s cancer – it stokes our fears about foods. You’re not going to prevent or cure cancer with supplements (or presumably foods that are rich with those nutrients). Antioxidants don’t really help prevent cancer. Soy won’t stop certain types of cancer. Nor will certain foods make you lose weight. There really are only a few ways to prevent cancer,
Most of these beliefs about foods, health and weight loss are based on either a boatload of anecdotal evidence, or use very preliminary laboratory research, make a leap of faith, and assume that laboratory evidence is equivalent to clinical evidence. Then, when the gold standard of research, a randomized clinical trial is done, the results generally show nothing. And in some cases, the negative effect is with the supplement or food.
And if you’re looking to try the newest diet craze, be aware that most fad diets just have no long-term successes, and may actually do harm. The newest one is based on the paleolithic diet myth.
Continue reading “Paleolithic diet myth – what our ancestors ate”
Americans are ignorant fools about evolution – there is simply nothing more frustrating than evolution deniers, sometimes called “creationists” that have infiltrated the discussion about evolution.
The body of work that constitutes evidence for evolution is literally mountainous, making up over a million peer-reviewed studies and books that explain what we have observed in current living organisms and the fossil record. In addition, over 99.9% of scientists in the natural sciences (geology, biology, physics, chemistry and many others) accept that evolution is a scientific fact (pdf, see page 8). If science worked as a democracy, it would be a landslide vote in favor of evolution.
The scientific theory of evolution is quite easy to understand – it is the change in inherited characteristics of a biological population over time and generations through the process of natural selection or genetic drift. Setting aside the creationist misinformation about what constitutes a scientific theory, evolution is a scientific fact, about as solid as the fact that the earth revolves around the sun.
There is no scientific debate about evolution, although there is continuing discussion about all of the possible mechanisms that drive evolution beyond natural selection and genetic drift. These discussions are based on the observations and evidence that evolution lead to the diversity of organisms we see today, arising from a common ancestor from about 3.8 billion years ago.
Despite the ongoing scientific research examining other mechanisms for evolution (which are all scientifically based, and none that include magical actions of mythical supernatural beings), the matter of evolution is settled. There are no scientific disputes about the fact that evolution has occurred over a period of 3.8 billion years until present time. None.
Other than literature published in self-serving creationist journals, it is impossible to find a peer-reviewed article that disputes the fact of evolution published in a real scientific journal over the past 25 years, if not past 50 years.
Despite the scientific facts, American politicians, almost exclusively conservative Republicans, continue to push legislation to force public school districts to teach creationism. Even though rarely successful, unfortunately, Louisiana and Tennessee have recently implemented antievolution legislation. These right wing politicians are convinced that evolution and creationism are equivalent, and they defer to a ridiculous political and cultural “debate” while ignoring the overwhelming scientific consensus.
Once again, many or most Americans are ignorant fools about evolution – thus, politicians, at least in some areas of the country, think they have the political cover to do whatever they want with regards to the teaching of creationism.
Continue reading “Americans are ignorant fools about evolution”
I am really impatient with science deniers, so I saw something that will allow me to mash up two of my favorite subjects – the Walking Dead and science denialism – and it makes me happy. I know, you want to know how I can possibly combine the Walking Dead and science denialism – you’re just going to have to read on!
I know it’s shocking, but I find it difficult to be really civil towards science deniers. Partially, it’s because no matter how much evidence you present, science deniers rely on logical fallacies like strawman arguments, arguments from ignorance, post hoc ergo propter hoc fallacies, and so many others.
Or they rely upon all of their biases. Confirmation bias, yes. Selection bias, yes. Cognitive biases, yes. And that logical fallacy that’s also a form of bias – cherry picking. The denialist’s favorite fruit has got to be cherries, because they’re picking them all day long.
Then toss in a big dollop of Dunning-Kruger effect, and it’s really difficult to take any science deniers very seriously. They take themselves seriously, despite their total lack of affirmative or negative evidence.
The only thing that matters in science is evidence. That’s it, that’s the beginning and the end of the story. I don’t care if you’re a man, woman, alien, immigrant, liberal, conservative, a janitor, a professor, black, white, or a Nobel Prize winner. If you lack evidence, you have nothing.
If you think there are debates to be made in settled science, that means you get the denialism card, no matter who you are. If you are an MD, and think that vaccines don’t work, then why should I consider your opinion on anything in medicine to be valid, when you’re denying some of the basic principles of medicine – the Germ Theory, for example. Continue reading “Mashing up the Walking Dead and science denialism”