Why we can say that some things do not exist

In two recent posts I discussed the question posed as to why there is something other than nothing and whether the question was even meaningful. The difficulty of showing that something does not exist is not confined to questions about the universe as a whole, it even applies to individual entities where you think it might be easier.

I got a text from a person I know and attached to it was a video of what looked like an organism consisting of the head and tail of a fish and, in between, the torso of a human being with arms behind its back and three pairs of breasts. This looked like it had been forwarded multiple times on social media and this person asked me if I thought it was real. I replied that it is safe to assume that anything seemingly bizarre that floats around the internet, and is not cited to a reputable news source along with supporting evidence, is a hoax. I did not tell him it was impossible that it was real because such a level of certainty implies omniscient knowledge on my part. But it is possible to be effectively certain that some things do not exist if one follows the logic of science.
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Atheists are not a strong political force

Ten years ago, the Reason Rally was held in Washington DC. It was meant to serve as a big coming out party for atheists and nonbelievers and I was among those who attended. The day was rainy, which put a damper on things, but the mood was festive and celebratory. But as this article says, some of the high expectations of that day did not quite pan out.

Ten years ago, thousands of atheists, humanists, and skeptics descended by the busload upon the National Mall in Washington to attend the Reason Rally, the largest-ever gathering of nonbelievers. “We’re here, we’re godless, get used to it,” chanted the crowd, estimated to have between 10,000 and 30,000 people. For America’s growing non-religious movement, it was a jubilant coming-out-of-the-closet party.
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Religious faith leads to the deaths of children

Zimbabwe has reported an outbreak of measles in a part of the country in which 157 children have died. They were not vaccinated. Why? Because they are members of a Christian sect that opposes vaccinations for religious reasons.

A measles outbreak in Zimbabwe has killed 157 children with the death toll nearly doubling in just under a week, the information minister said on Tuesday.

The government last week blamed apostolic church sects for the surge in infections, saying measles was largely prevalent among those who had not received vaccinations.
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Most reported cases are among children aged between six months and 15 from religious sects who do not believe in vaccination.

“It has been noted that most cases have not received vaccination to protect against measles. Government has invoked the Civil Protection Unit Act to deal with this emergency,” Mutsvangwa said.

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New polio case in the US

The concerted global effort to eradicate polio has been one of the greatest success stories in vaccinations, science, and public health in our lifetimes. Almost the entire world, with the exception of Pakistan and Nigeria, where anti-vaccination fears are prevalent, are considered polio-free,

So I was alarmed to read that a new case has been detected in New York.

An unvaccinated young adult from New York recently contracted polio, the first US case in nearly a decade, health officials said Thursday.

Officials said the patient, who lives in Rockland county, had developed paralysis. The person developed symptoms a month ago and did not recently travel outside the country, county health officials said.
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The impact of old Earth theories on religion

In the endless comment thread in the post that dealt with the congressional hearings (262 comments and counting!), the original topic has long been forgotten and the discussion now deals with creationist theories that seek to reconcile scientific knowledge about Earth’s geology with a biblical-based chronology. These attempts at reconciliation have a long history and I dealt with this topic on pages 68-75 of my book The Great Paradox of Science. I reproduce that section below for those interested in the history of how these creationist beliefs came about, starting with Bishop Ussher’s influential calculation in 1650 CE that the age of the Earth was about 6,000 years old. It also shows the beginning of the convergence of studies from a wide variety of scientific fields to arrive at the current consensus that the age of the Earth is about 4.5 billion years.
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The allure of forbidden foods

The story of Adam and Eve tells how Eve was tempted by the serpent to eat the fruit from a particular tree that God had forbidden them to eat. That story captures well how being ordered to refrain from eating something can make that food particularly alluring. This is especially the case when the ban seems arbitrary. After all, nobody wants to eat food that they are warned against as being poisonous and most people have no difficulty avoiding food that they are told is unhealthy or awful tasting. But being asked not to eat something that so many other people seem to eat and enjoy just because some religious leaders tell them not to makes the food particularly intriguing and must make them wonder what must it taste like. The very arbitrariness of these rules adds to the mystique of these foods and would make people curious about what could possibly happen if they tried it. And yet they usually refrain, out of a mix of obedience, loyalty to their family and community and religion, and fear of what might happen if they break a rule that was supposedly handed down by their god.
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A Pyrrhic victory for religious symbolism

While much of the week’s legal news has centered on the leaked draft of a US Supreme Court that revealed that a majority of the court have decided to overturn the Roe v. Wade decision that legalized abortion in the US, there was another ruling on Monday that has much less of a momentous impact, and that was the unanimous opinion that said that the city of Boston could not forbid the flying of a flag at city hall that had a cross on it.

The city of Boston violated the free speech rights of a Christian group by refusing to fly a flag bearing the image of a cross at city hall as part of a program that let private groups use the flagpole while holding events in the plaza below, the US supreme court ruled unanimously on Monday.

The 9-0 decision overturned a lower-court ruling that the rejection of Camp Constitution and its director, Harold Shurtleff, did not violate their rights to freedom of speech under the first amendment to the US constitution.
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Francis Collins, religious scientist

The geneticist has had a distinguished career and for the last dozen years has served as director of the National Institutes of Health, a massive federal agency that does basic research as well as fund the research of scientists in the US. The fact that he has served during three different administrations both Republican and Democrat shows that he has managed to avoid much of the partisan attacks that now routinely target prominent scientists, such as tthose on Anthony Fauci, who is head of one of the agencies that are under the NIH umbrella. Collins has been steadfast in his support of Fauci.

Collins is also an evangelical Christian, a fact that caused many people in the non-religious community to oppose his nomination by George W. Bush to be head of the NIH. But he has won over the skeptics by the way he has handled his tenure, with no evidence that he was driven by his religious beliefs in making scientific decisions.

He also wrote a best-selling book The Language of God where he attempted to reconcile belief in a god with science. I dissected that book in a 11-part (!) series of blogs back in 2009 where I pointed out the many flaws in his argument. But I have always respected Collins as a scientist and I especially admired his steadfast commitment to make freely available to everyone the data that were generated during the sequencing of the human genome, where he was named leader of the federal effort.
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