Most of the knowledge we believe in our lives relies on certain seemingly very common sense logic of thought and scientific facts. But sometimes, certain knowledge, while appearing to be very much in line with scientific facts, may actually contain quite a bit of misinformation. And this time, I have compiled, 8 misconceptions about the human body that have been debunked by science.
1. We don't use only 10% of our brain
There are many myths about the brain, such as the misnomer that we only use 10% of it. But in popular culture, including some science fiction movies, there is always a fond reference to this false knowledge. Scientific experiments show that most areas of our brain are working most of the time, depending on what we're doing. And there are differences depending on the individual.
2. Swimming after eating does not cause cramps
The argument that swimming after eating makes us cramp has been around the world for a long time, the reason being that after we eat, too much blood goes to the stomach to help us digest our food better, which leaves the rest of the body short of blood and therefore more prone to cramping. It's true that you shouldn't go swimming or do other exercises immediately after eating, but it doesn't cause cramps and there is no direct link between them.
3. A dog's sense of smell is no better than a human's
Rumors of dogs' superb sense of smell have been around for a long time, and it has long been believed that dogs have a considerably stronger sense of smell than humans, and the idea has a somewhat dated scientific fact to back it up. In the 19th century, neuroanatomist Paul Broca claimed that humans have a terrible sense of smell because the evolutionary expansion of the human frontal lobe gave humans free will at the expense of the olfactory system. But today new scientific research has debunked that claim. Humans don't have a poor sense of smell compared to dogs, they just have different sensitivities for different types of smells because of differences in nose construction. For example, dogs are more likely to recognize urine, while humans are better at distinguishing between more pleasant aromas and volatile chemicals.
4. Breaking knuckles does not increase the risk of arthritis
In life, some people possess the habit of breaking their knuckles. This habit is seen by some people as increasing the risk of arthritis, but this is not true. There is actually no link between this behavior and the incidence of arthritis.
5. Your fingerprints may not be unique
Almost everyone is aware of the physical fact that human fingerprints are unique. This idea has been around since the 19th century. It is the uniqueness of fingerprints that makes it possible to help us identify individuals and apprehend criminals. However, if we look at it from an absolutely rigorous point of view, fingerprints are not completely unique, and although the probability is very low, there have been cases where people with identical fingerprints have existed. The probability is about 1 in 15 billion. In 2005, a study presented 22 known cases of fingerprint errors in which people were charged with crimes they did not commit because of fingerprint identification.
6. Curled tongue is not a genetic trait
The ability to curl your tongue has long been considered a dominant genetically inherited trait. But geneticist Philip Matlock has disproved this theory. In a survey and study of 33 pairs of twins, he found that seven pairs did not have this ability. In particular, identical twins, who share the same genes, should also both have the trait, but this is not the case. This suggests that genes are not the determining factor in tongue curling.
7. The tongue taste map does not exist
The tongue helps us taste a variety of flavors, and many of us were probably taught from an early age the scientific fact that different areas of our tongue can taste different flavors, and we can easily find a tongue taste map. In many places, tongue taste maps are even used as textbooks in schools. However, scientists have long since come to the conclusion proving that our entire mouth can perceive different tastes.
8. You have more than 5 senses
The fact that humans have 5 senses - sight, hearing, taste, touch and smell - has been believed for at least 2000 years, as the first person to suggest it was the ancient Greek philosopher Aristotle. But modern scientists have clearly shown that there are definitely more than 5 senses in humans, and that in addition to those mentioned by Aristotle, there are also the senses of thirst, balance, temperature, and so on, containing at least 33 in total.