The enduring power of “old wives’ tales” – the belief that wet hair causes colds, the skipping of the 13th floor in some buildings, or the fear of “jinxing” a winning streak – isn’t a sign of irrationality, but a window into how the human mind fundamentally works. It’s tempting to dismiss these as relics of a pre-scientific age, but their persistence, even amongst those with strong scientific literacy, demands a deeper look. The question isn’t simply why people believe these things, but how our brains reconcile seemingly contradictory information – established scientific understanding alongside deeply ingrained cultural beliefs and personal experiences. And, crucially, when this reconciliation becomes problematic.
The roots of many superstitions lie in older, holistic belief systems. Ancient Greek and Chinese medicine, for example, emphasized balance and harmony between the body and its environment, making temperature regulation a key component of health. While we now understand that viral exposure is the primary driver of the common cold, this historical context explains the origin of the idea that external factors like wet hair could compromise our defenses. Recent research with mice does suggest a correlation between colder temperatures and increased susceptibility to respiratory viruses, but this doesn’t validate the specific claim about wet hair; rather, it highlights the complex interplay between environment and immune function. It’s a nuance often lost in popular reporting, which frequently equates correlation with causation.
This tendency to seek explanations, even when incomplete or inaccurate, appears to be a fundamental human drive. Psychologists describe this as “sense making,” a powerful motivation akin to basic needs like hunger. However, the drive to explain doesn’t guarantee the accuracy of those explanations. Our brains don’t operate with a perfectly organized database of rigorously vetted information. Instead, knowledge is stored as fragmented “puzzle pieces” – a mix of scientific facts, family lore, and anecdotal evidence – and quickly assembled when we need to understand a situation. This explains why a scientifically-minded individual might simultaneously understand germ theory and hesitate to go outside with damp hair.
What’s particularly fascinating is how readily science and the supernatural can coexist. Dr. James Jones and colleagues’ research in rural South Africa during the AIDS crisis provides a compelling example. After public health education campaigns promoting understanding of HIV transmission, the belief in witchcraft didn’t disappear. Instead, it adapted. People began to view witchcraft not as the cause of AIDS, but as a potential factor contributing to vulnerability – perhaps influencing the choices that led to risky sexual encounters. This “explanatory coexistence,” as Dr. Jones termed it, demonstrates our capacity to integrate seemingly incompatible frameworks of understanding.
This article draws on reporting from theconversation.com.
This integration, however, can become dangerous when it veers into pseudoscience. The COVID-19 pandemic offered a stark illustration of this risk. The scientifically accurate statement that sunlight and bleach can kill viruses was dangerously misinterpreted, leading to the spread of false claims about curing COVID-19 through ingestion or exposure. This highlights the vulnerability created by superficial understanding; when our knowledge is limited, we’re more susceptible to plausible-sounding but ultimately harmful misinformation. We often defer to others – doctors, family members, even social media influencers – believing they possess specialized knowledge, and anecdotes frequently outweigh evidence in shaping our judgements.
So, is this blending of belief systems something to be “reined in”? The answer isn’t straightforward. Avoiding harmless rituals like avoiding the 13th floor or blaming a commentator for a sports loss isn’t necessarily detrimental, and may even offer a sense of control. However, when these beliefs translate into consequential decisions – refusing a relationship based on astrological incompatibility, for example – it’s time for critical self-reflection. The key lies in interrogating why we believe something, and actively seeking credible sources to fill knowledge gaps. Improving the quality of our “puzzle pieces” will inevitably lead to more accurate and beneficial ways of assembling them.
Looking ahead, researchers are beginning to explore the neurological basis of superstitious thinking, using brain imaging to identify the regions involved in processing uncertainty and attributing causality. Understanding these mechanisms could inform strategies for combating misinformation and promoting evidence-based decision-making. But perhaps the most important question isn’t just how we think, but what happens when we stop questioning why we think it in the first place. Will increased scientific literacy alone be enough to counter deeply ingrained beliefs, or will we need to develop new approaches to fostering critical thinking and intellectual humility?
