Những lầm tưởng mà con người vẫn cho là đúng trong 14 phút

TL;DR

Key insights

Common Misconceptions Debunked

• Many widely believed 'facts' about animals, human biology, and physics are inaccurate.
• Cultural portrayals in media often create or perpetuate these myths.
• Scientific understanding and evidence contradict popular beliefs on numerous topics.

Human Biology and Capabilities Myths

• The '10% brain usage' myth is false; the brain is active 100% of the time for various functions.
• Shaving hair does not make it grow back thicker; it only creates a blunt edge.
• Sweating does not directly burn fat; it primarily releases water and electrolytes.

Animal Behavior Myths

• Bulls are not enraged by the color red; they react to the movement of the cape.
• Goldfish do not have a 3-second memory; they can remember things for weeks or months.
• Bats are not blind; they have good eyesight, especially in low light, and use echolocation.

Physics and Everyday Phenomena Myths

• Pure water is a poor conductor of electricity; impurities make tap water conductive.
• The 5-second rule for dropped food is unscientific, as bacteria transfer instantly.
• Chewing gum does not stay in your stomach for 7 years; it passes through the digestive system normally.

Key moments

• 00:23Debunking the myth that waking someone sleepwalking is dangerous, stating it only causes slight confusion unless they have underlying psychological issues.
• 00:56Addressing the myth that humans only use 10% of their brain, explaining that the entire brain is active, though not all at once for conscious thought.
• 01:41Clarifying that bulls react to the movement of a red cape, not the color red itself, as they are largely colorblind to red.
• 02:30Debunking the 5-second rule for dropped food, explaining that bacteria transfer instantly upon contact.
• 02:48Correcting the misconception that the Great Wall of China is visible from space with the naked eye; it is not.
• 03:01Explaining that dogs primarily regulate temperature by panting, not sweating through their tongues, as they have few sweat glands.
• 03:31Clarifying that sweating does not reduce body fat; it primarily releases water and electrolytes.
• 03:41Addressing the myth that bats are blind, explaining they use echolocation and have good vision in low light.
• 03:59Discussing the myth that sweat is odorless, explaining that body odor is caused by bacteria on the skin interacting with sweat.
• 04:11Explaining that pure water does not conduct electricity well; impurities in everyday water make it conductive.
• 04:32Debunking the 'drink 2 liters of water a day' rule, stating that individual water needs vary based on factors like weight and activity level.
• 04:54Correcting the myth that cutting a worm in half creates two new worms; it can only regenerate lost body parts, not create new individuals.
• 05:11Debunking the image of Viking helmets having horns, stating historical evidence suggests they were simple round or conical hats.
• 05:31Clarifying that mice do not have a particular fondness for cheese; their primary diet consists of grains and other foods.
• 05:48Explaining that while carrots are rich in Vitamin A and good for eye health, they don't grant night vision capabilities.
• 05:59Discussing the misconception that the 'forbidden fruit' Adam and Eve ate was an apple, noting the Bible doesn't specify the fruit.
• 06:11Revealing that Santa Claus's iconic red suit was popularized by a Coca-Cola advertisement, not an ancient tradition.
• 06:35Correcting the belief that the pyramids were built by slaves, stating they were constructed by skilled laborers and seasonal workers.
• 06:59Explaining that incognito mode does not guarantee true anonymity online; browsing activity can still be tracked by websites and ISPs.
• 07:10Debunking the health benefits of fruit juice, as it primarily contains sugar and lacks the fiber found in whole fruits.
• 07:36Addressing the folk remedy of urinating on jellyfish stings, advising against it due to the risk of infection and recommending sea water or vinegar instead.
• 07:59Explaining that playing dead when encountering a bear can be effective with grizzly bears but not with black bears, who may investigate further.
• 08:01Correcting the myth that camels store water in their humps; the humps store fat, which provides energy and metabolic water.
• 08:16Debunking the idea that deserts are always hot, noting that while daytime temperatures are high, nighttime temperatures can drop significantly below freezing.