Mind-boggling paradoxes, phenomena, and effects intrigue us even if there’s a logical explanation for them. When you face them, you might feel that someone is interfering with the laws of nature.
Bright Side found several brain-twisting paradoxes and problems that you can test yourself and decide whether to believe or not.
10. Birthday problem
This paradox suggests that in a group of 23 people there’s a 50% chance that at least 2 of them share the same birthday. In a group of 60 people, the probability reaches almost 99%.
Do you think it’s absurd? That’s the whole paradox. However, the mathematical calculations prove that it is actually possible.
9. The Baader-Meinhof phenomenon (frequency illusion)
Here’s a simple explanation for this mind phenomenon: the Baader-Meinhof phenomenon occurs when you’ve just learned about the Baader-Meinhof phenomenon, and now you repeatedly notice the Baader-Meinhof phenomenon everywhere.
It’s not about coincidence. Before you learn a new word, you never notice it in the whole flow of information.
8. Dropped marble sound
Many people seem to hear a weird sound at night. It’s like neighbors from above dropped a marble ball and let it roll on the floor.
You can find numerous discussions of this matter on the internet, but there’s still no common opinion. Most likely, concrete and pipes expand and contract during the hot and cold seasons, thus creating this sound.
7. Strange-face-in-the-mirror illusion
Italian psychologist Giovanni B. Caputo studied the illusion that is created by looking at your own reflection for a long time. Some people see their parents or fantastic creatures; others see a different version of their own face.
There’s no mystery, just a simple explanation for this situation. The illusion occurs when the visual system perceives the same object again and again but identifies it differently.
6. Jamais vu
Jamais vu can be literally translated from the French as never seen, and it’s the opposite of déjà vu. For example, you know a certain word perfectly well but suddenly have the feeling that you’re seeing it for the first time. The easiest way to create jamais vu is to repeat a word several times. You’ll feel that it sounds weird and has no sense.
Jamais vu and déjà vu are still a mystery to scientists.
5. The Mandela Effect
The effect was named after a common disambiguation that Nelson Mandela died in prison 40 years ago. In fact, he died at home in 2013. Millions of people seem to have the same memories about this fact, and there are many examples of common facts we all remember wrong.
Of course, there are scientific explanations, but many people prefer to believe in the parallel universe theory or changes in historical facts.
Here’s another popular example of the Mandela Effect for you. How many people were in the car with President Kennedy? There are so many photographs of the fateful day that you might think it’s ridiculous to have doubts about it.
However, most people seem to believe there were 4. In actual fact, there were 6 people in the 6-seat car: the President, the First Lady, the Governor of Texas, his wife, an unknown man, and the driver.
4. Out-group homogeneity effect
All members of one group seem to be very similar to one another, especially when you’re not a part of this group. For example, all cowboys are the same, or all people who belong to a certain subculture, or all people of a different race. It’s not about racism but more about the basic instinct that makes us think “They are alike; we are diverse.”
3. The synesthesia effect
This condition occurs when the perception of visual images is accompanied by sound effects (or the other way around). You may hear colors or see aromas. For example, the figure 3 is blue, fluffy, and sticky.
The spread of this effect is not known for sure: some data suggests that 1 person out of every 2,000 can experience it. Others state 1 out of 23. The main difficulty in the research is that some people don’t consider their synesthesia as something unusual or different from other people’s feelings.
2. The Uncanny Valley Hypothesis
The attractiveness of a robot increases with the robot’s human likeness. However, when it looks almost like a human, you have elicit feelings of eeriness and revulsion.
The construction of a robot’s appearance should be either very precise to look exactly like a human or very general to look more like a machine.
1. The rule of 6 handshakes
According to this rule, every person knows every other person on the planet through a certain number of handshakes. And this number is 5.
We put this theory into practice in one popular social network, and it turns out to be true. We checked more than once. The author of this article is 3 friends away from a Prime Minister.
Use the comment section below to share with us which effects and phenomena you have experienced.