8 misconceptions are ingrained in human consciousness, even included in textbooks

There is a lot of knowledge that was once misunderstood by the vast majority of us, scientifically proven but you may not have grasped it.

American writer Mark Twain once said: "Never let school limit your ability to learn." This statement is not to downplay the role of the school, but to imply that knowledge is immeasurable, what you learn in class may not be enough. In addition to the fact that science over time brings new discoveries, even changes to long-held ideas, it requires us to strive continuously.

In fact, it is true that a lot of knowledge that was once misunderstood by the vast majority of us, has been scientifically proven that you may not have grasped.

1. Humans evolved from apes

Many people still believe that humans evolved from chimpanzees, or similar apes. But in fact, the father of Charles Darwin's theory of evolution never said that. He points out that humans have a lot in common with monkeys and apes, so it seems that both species will have some common ancestor millions of years ago.

2. Humans stand atop the food chain

Humans rely on their intelligence, creativity, and coordination among individuals to become the rulers of the Earth. However, from a biological perspective, it is not right to say that humans stand atop the food chain.

Based on the eating habits of humans and animals, a study in the Proceedings of the National Academy of Sciences (USA) shows that humans are not superior to predators, even just on par. . pig or fish.

This is because leaving a creature standing on top, it will only be eaten by predators below it. Humans are obviously not like that, because we eat a mixture of both vegetables and meat. Moreover, we easily fall prey to wild animals.

3. Cats and dogs are color blind

This misconception stems from an experiment in 1915, showing that cats cannot distinguish a colored paper from black and white paper. But in a later study, the scientists determined that cats could see the color completely, except for red, or rather, they could not perceive red as well as the human eye.

Dogs are the same way - everyone thinks they are colorblind, but they just ca n't tell the difference between red and orange , and other colors don't matter.

4. People only have 5 senses

In ancient Greece, Aristotle established the foundation of the concept that people have only 5 basic senses: hearing, sight, smell, touch, taste.

But later when people understand more about the brain, we actually have more senses. Such as hunger, thirst, pain . are all senses. So does the ability to sense temperature. In general, the number of human senses depends on the definition of science.

5. Each region in the tongue feels different

Once upon a time, the taste map on the tongue became extremely popular. Accordingly, the tongue has 4 parts to take on different flavors: sweet, sour, salty, bitter .

However this is completely a misconception. In fact, taste buds are distributed over the entire tongue surface. That is, no matter what the taste, every part of the tongue will feel it.

6. Ostriches nest their heads in the sand when frightened

Ostrichs wedged their heads in the sand when fear existed for a long time, even being included in many Hollywood movies. But in reality, things are not like that.

When scared, the ostrich will do like any other creature in the world, which is to run away . If they do not run, they will lie dormant, close to the ground.

Snuggling in the sand does exist, but it is not out of fear. They do this when they need to swallow pebbles and sand - things that can help ostrich digestive system work more efficiently. In addition, when it is necessary to dig holes to incubate eggs, they will do so.

7. Goldfish brain

The phrase "goldfish brain" refers to those who forget, originating from the concept that goldfish cannot remember anything for more than 3 seconds.

But through a lot of research, scientists found that goldfish are not as easy to forget as we imagine. They can remember one thing during the next 3 months .

8. Camels store water in their hump

It is true that camels can live for a few days without water, but not because they have stored water in their hump.

Camel's tumors contain only fat - a source of stored fat, which provides enough energy for a few days to better survive in deprived desert environments. The real place to help them store water is the kidneys and the intestines.