Category: Critical Thinking

“Aborted fetal tissue” and vaccines: Combining pseudoscience and religion to demonize vaccines

As hard as it is to believe after seven and a half years of existence and nearly 2,400 posts on SBM, every so often, something reminds me that we here at SBM haven’t discussed a topic that should be discussed. So it was a couple of weeks ago, when I saw a familiar name in a news story that wasn’t about vaccines....

/ August 17, 2015

Answering Cancer Quackery: The Sophisticated Approach to True Believers

I got an e-mail with a link to a video featuring “Dr.” Leonard Coldwell, a naturopath who has been characterized on RationalWiki as a scammer and all-round mountebank. Here are just a few examples of his claims in that video: Every cancer can be cured in 2-16 weeks. The second you are alkaline, the cancer already stops. A pH of 7.36 is...

/ June 30, 2015

Don’t just stand there, do nothing! The difference between science-based medicine and quackery

The Merriam-Webster Dictionary defines science as: Knowledge about or study of the natural world based on facts learned through experiments and observation. And: Knowledge as distinguished from ignorance or misunderstanding. While this should distinguish science from pseudoscience, those who practice the latter often lay claim to the same definition. But one of the major differences between science and pseudoscience is that science...

/ May 22, 2015

What Should We Do in the Absence of Evidence?

What to do in the absence of a clear diagnosis and randomized, controlled trials? Often nothing, sometimes something. It's complicated.

/ May 1, 2015

On the “right” to challenge a medical or scientific consensus

While everyone has the "right" to challenge a scientific consensus, overthrowing a scientific consensus takes data. Lots and lots of data. Few people realize how difficult it is.

/ March 23, 2015

Do two half-truths add up to a complete truth or a complete falsehood? Vaccinations truthiness.

I swear that the evidence that I shall give, shall be the truth, the whole truth and nothing but the truth The interwebs are not a court of law, that is for sure. The whole truth. Interesting idea. I have no idea how applicable Godel’s theorems are outside of mathematics, but from a practical point knowledge is always incomplete. There is too...

/ February 6, 2015

A Scientist in Wonderland

Edzard Ernst is one of those rare people who dare to question their own beliefs, look at the evidence without bias, and change their minds. He went from practicing alternative medicine to questioning it, to researching it, to becoming its most prolific critic. I have long admired his work, and I finally met him in person when we were invited to speak...

/ February 3, 2015

Unfalsifiable Beliefs

As we search for a logo for SBM or the SfSBM, Mark Crislip has been a strong advocate of using an image of Sisyphus, endlessly pushing a boulder up a hill only to have it roll back down again. It’s a bit too self-defeating to be enthusiastic about that suggestion, but it does reflect a common feeling among all of us here...

/ January 21, 2015

Shedding Light on Unreasonable Decisions

One of the biggest frustrations for a doctor is when a patient refuses to take science-based medical advice. We would like to believe that giving a patient accurate information will lead him to make good decisions that will improve his health or save his life. But that’s not how it works. Patients reject life-saving surgery and chemotherapy, patients on essential medications are...

/ January 20, 2015

Mel asks and I do my best to answer. On acupuncture.

I read a lot of the pseudo-medical websites. The writing is at best pedestrian, often turgid, and, at its worst, incoherent. It is rarely either engaging or clever. Wit, the clever bon mot, the amusing turn of phrase or retort, is rare at best. So rare I cannot think of an example. It is ironic that those who engage in fantastical treatments...

/ January 9, 2015