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We've all heard the saying, “Don’t believe everything you see,” but what if even the things we hold as undeniable truths don't always hold up under close examination? Even when an idea is proven to be false, it can persist as fact for a long time.
There are concepts we accept as obvious or scientifically confirmed, yet they turn out to be mere creations of popular culture. Sometimes, even the so-called experts make mistakes—and occasionally, they do it intentionally.
10. Non-Celiac Gluten Sensitivity
Gluten sensitivity is commonly linked to celiac disease, which leads to digestive problems. In 2011, researcher Peter Gibson found that even individuals without celiac disease could experience similar discomfort when consuming gluten. This sparked the rise of the gluten-free trend, fueling a market worth billions. However, Gibson remained skeptical about its widespread prevalence, prompting him to conduct further studies.
He conducted a study with 37 individuals who identified themselves as gluten-sensitive, all of whom did not have celiac disease. The participants followed diets of high-gluten, low-gluten, and no-gluten phases, without knowing which one they were on at any given time. Ultimately, every participant reported symptoms associated with gluten sensitivity throughout the entire study.
Gibson acknowledged that the participants were likely more mindful of their condition during the study. He also noted that gluten-containing foods often come with other potential triggers for symptoms, yet this still couldn't fully explain the symptoms reported during the gluten-free phase. In short, the very researcher who introduced the idea of non-celiac gluten sensitivity no longer believes it exists.
9. Pterodactyls Were Around for Only About 30 Years
The term “Pterodactyl” is commonly used to refer to the iconic flying dinosaur in popular culture. However, the creature actually known as “pterodactyl” existed for just around 30 years. Georges Cuvier, the so-called “father of paleontology,” coined the name due to its long finger that extended into its wing. But after his discovery, paleontologists uncovered a wide variety of other “pterodactyls,” with such significant differences among them that it became clear they didn’t all belong to a single species.
The term “dactyl” was originally used to classify these dinosaurs, but as more discoveries were made, it became clear that this term couldn't encompass the variety of new finds. As a result, the broader term “pterosaur” was introduced to better categorize them. Further studies revealed an even more surprising fact about pterosaurs: they weren’t actually dinosaurs, but a distinct group of flying reptiles that lived alongside them.
This reclassification largely occurred after paleontologists took a closer look at the definition of “dinosaur” itself. While pterosaurs were placed on the same family tree as dinosaurs, they were not close enough to be considered true dinosaurs. The species *Pterodactylus antiquus*, the flying reptile that most closely represents the term “pterodactyl,” is now the sole species in its genus.
8. Photographic Memory: The Myth of Perfect Recall
The idea of a photographic memory, where certain individuals can perfectly recall visual information, has existed for quite some time. However, whenever subjected to scientific scrutiny, it has either failed miserably or couldn’t be reproduced. One famous study that “proved” the existence of photographic memory was conducted by a scientist who later married his subject and never attempted to repeat the test. Other attempts to prove photographic memory have similarly failed to replicate their initial results.
The closest real-world counterpart to photographic memory is called eidetic memory, but contrary to popular belief, it isn’t a version of flawless visual recall. Eidetic imagery is a mental snapshot that stays in the mind for a short time. Around two to fifteen percent of children have this ability, but its occurrence decreases with age. Even with eidetic memory, individuals don’t have perfect recall—what they remember is often their mind filling in the gaps.
Photographic-like memories were once thought to only exist in autistic savants. Despite their extraordinary recall abilities, these individuals still lacked the perfect memory typically associated with the condition.
7. A Nonexistent Particle Disrupted 30 Years of Chemistry
The validity of a substance that has been integral to decades of chemical calculations is now under scrutiny, raising questions about a significant amount of research. Researchers from the University of Western Australia have found no evidence that sulfide ions, as dissolved in aqueous solutions, actually exist. Their findings, made during research on metal sulfides, suggest that this particle, once assumed to be real, may never have been detectable.
Previously, older spectroscopic methods lacked the sensitivity to detect this theoretical substance. As a result, past chemistry relied on predictions based on calculations. Even when no evidence was found, scientists assumed the substance existed, albeit in amounts too small to measure.
The UWA team criticized this approach as “laziness” and “bad practice” within the scientific community. This isn't the first instance of this experiment being conducted; a similar study from 1983 reached the same conclusion but was largely ignored, further highlighting the scientific community's neglect of the issue.
6. The Hunter Island Penguins Never Existed
In 1983, scientists discovered bone fragments on an island off the coast of Tasmania, which they initially thought belonged to a new species of penguin. Dubbed the “Hunter Island penguin,” this species was believed to have gone extinct around 800 years ago. However, the true identity of the penguin and its place in the fossil record remained a mystery until DNA testing became available.
The analysis of the bone fragments turned the entire case upside down. By extracting DNA from the degraded remains and comparing it to a database of known penguin species, scientists found matches with three penguin species that are still alive today.
Modern DNA testing has revolutionized the way we understand species evolution. In this case, it revealed that the so-called Hunter Island penguin was not a distinct species at all. While not as thrilling as discovering a brand-new species, it provided valuable insight into the past, showing that three penguin species had coexisted on the island, with their remains becoming mixed over time.
5. The Supermodel Who Never Was
In February 2018, a captivating image of a dark-skinned model began circulating on Instagram after being reposted by Fenty Beauty, Rihanna's makeup brand. The striking photo of “Shudu” sparked interest in the presumed African model. However, by March, the buzz surrounding Shudu shifted from her beauty to a shocking revelation: she wasn’t a real person.
It turned out that Shudu was a creation of Cameron-James Wilson, a fashion photographer who designed her using a 3D digital art program. Initially celebrated for her role in challenging the predominantly non-diverse modeling industry, especially in representing black women, the admiration for Shudu quickly turned into controversy when it was revealed that she was merely a fictional character crafted by a white British man.
Wilson faced accusations of racism, of profiting from a white male fantasy, and of taking opportunities away from real black models who could be hired for such roles. Although Wilson gained significant attention for creating Shudu, he has yet to profit directly from her—no deals have been made for her to represent brands, although he intends to in the future. Wilson defends his work, stating that 3D modeling is a small part of the fashion industry and unlikely to displace jobs, adding that if the field grows, it will create new roles in areas separate from traditional modeling, which his critics are concerned about. Whether welcomed or not, Shudu and other digital models are likely here to stay.
4. Multitasking Is A Myth In Popular Culture
The concept of being a “multitasker” and having the ability to juggle multiple tasks simultaneously is actually a myth popularized by culture. For instance, when someone is typing while having a conversation, they’re not truly doing both at once, but rather rapidly alternating between the two. While it may seem like a trivial distinction, research indicates that the brain can't perform two similar activities at the same time, making multitasking counterproductive if you aim to be efficient.
Multitasking splits cognitive resources, leaving both tasks under-attended. This results in reduced productivity since neither activity gets the full focus it requires. One study showed that people who consider themselves chronic multitaskers perform the worst overall. They make the most mistakes, struggle with memory, and take longer to finish their tasks.
Although people who believe they're multitasking are just quickly switching between tasks, true multitasking does exist—but it's not as people usually imagine. For example, listening to instrumental music while studying works because the brain processes these tasks in different areas. However, if you add lyrics to the music, suddenly Beyoncé might be distracting you from your English homework, as your brain uses the same region to process language for both activities.
3. Fictitious Entries
Even though reference materials like encyclopedias, dictionaries, and maps are regarded as authoritative, some of them contain intentional inaccuracies. These fictional entries, either completely made up or false, are created deliberately to alert publishers to potential plagiarism in case their content is copied. Over the years, several prominent fictional entries have been discovered.
The 1975 edition of the New Columbia Encyclopedia features an entry about Lillian Virginia Mountweazel, a fountain designer who switched careers to become a photographer of mailboxes. Tragically, she died young in a violent explosion while working for a magazine called Combustibles. However, her explosive death was a fabricated story. The editor-in-chief of the encyclopedia revealed that it was a tradition to insert a fictional entry, allowing any reproduction to be traced back to the original.
It was later revealed that the New Oxford American Dictionary contained a fictional entry hidden somewhere in the “e’s.” In a bid to uncover the fake, an investigation was conducted. Lexicographers were given the suspected words, and most concluded that “esquivalience” was the invented term. The editor confirmed their suspicion, explaining that the word was chosen as an inside joke. The fabricated term was meant to describe the opposite of ‘working hard,’ a nod to the hard work the staff had put into compiling the dictionary. Plagiarizing the word meant doing the opposite of labor: simply copying and pasting.
2. Learning Styles
The concept of learning styles has long been embedded in educational practices. However, recent research has failed to provide conclusive evidence supporting their existence or impact on learning. In fact, several studies have suggested the contrary.
One study showed that students who identified as auditory or visual learners did not perform any better on word memorization when presented in their preferred style of learning. Another study failed to find any correlation between students’ preferred learning style and their performance on comprehension tests.
Learning styles are based on the idea that when students receive material in the learning style that best suits their brain, their performance will improve. However, researchers who have disproven this idea still acknowledge the existence of learning preferences. While the way material is presented may not have a direct impact on performance, students tend to favor specific modes of learning. Therefore, teachers might not want to replace visual and kinesthetic lessons with dry lectures just yet, as students still have preferences for how they learn, even if those preferences don't directly affect their performance.
1. The Best Restaurant in London
Oobah Butler once wrote fake reviews for restaurants, and the realization that restaurateurs profited from his deceptive reviews stayed with him even after he moved into professional writing. Eventually, he decided to test just how far he could push the deception by creating a fake restaurant on TripAdvisor and watching its popularity grow.
Butler launched a fake website for his restaurant, using the address of his private shed. He set up a disposable phone line to handle reservations. He posted several appetizing photos, though the ingredients were not real food, and 'The Shed at Dulwich' was born. Despite always being 'fully booked,' the imaginary restaurant continued to receive reservation requests, and it quickly climbed the ranks on TripAdvisor.
Over time, it rose to become London's highest-rated eatery. By that stage, Butler started receiving inquiries from various companies eager to collaborate with the Shed. Though he often had a ready excuse to avoid meeting with any representatives, eventually, TripAdvisor itself sought more details about his fictitious restaurant. Realizing the ruse had been exposed, he confessed—but not before establishing a dining area in his backyard and even accepting reservation requests. Guests showed up to find microwaved meals and lawn chairs, yet they weren't charged anything since they were told, with some truth, that they were taking part in a documentary. Butler meticulously recorded the entire charade from start to finish.
