Color of sneakers and beach or car: remember the 'mysteries' of the Internet in 2019 | Downloads |

Social networks were driven by great mysteries that involved users during the year 2019. A mathematical equation with two correct results and a meaningless expression that became a grunt on Twitter were among the most commented subjects this year. Also noteworthy were images that caused optical illusions, such as a photo of a sneaker that could be gray or pink, a cat that looked like a crow and the image of the bottom of a car that appeared to be the edge of a beach. To learn about these and other mysteries that were successful in 2019 on social media, check out the list below.

READ: 8 challenges that went viral on the internet in 2019; remember

Get to know the list of the biggest social media mysteries in 2019 Photo: Helito Beggiora / dnetcGet to know the list of the biggest social media mysteries in 2019 Photo: Helito Beggiora / dnetc

Get to know the list of the biggest social media mysteries in 2019 Photo: Helito Beggiora / dnetc

Want to buy cell phones, TV and other discounted products? Meet Compare dnetc

Solve the tennis mystery that changes color with the PicsArt app Photo: Reproduction / GirlsmouthSolve the tennis mystery that changes color with the PicsArt app Photo: Reproduction / Girlsmouth

Solve the tennis mystery that changes color with the PicsArt app Photo: Reproduction / Girlsmouth

The polemic of gray or pink sneakers was one of the curious themes highlighted in the year 2019. The image, shared in messengers such as WhatsApp and social networks, caused great confusion in people who could not identify the real shade of the shoe. Originally shared in 2017, the photograph reappeared, this time, accompanied by a possible scientific explanation of its effects.

According to the shared current, the reason why some people identify gray or pink in their sneakers was that there was a supposed predominance of brain activity on one side of the brain. However, as we found out at the time, the theory has no scientific basis. The reason for color confusion is linked to an optical illusion effect. As we also discovered, the free PicsArt app has a feature that can help users discover the real color of the object.

Beach or car? Image generates debate among Twitter users Photo: Reproduo / TwitterBeach or car? Image generates debate among Twitter users Photo: Reproduo / Twitter

Beach or car? Image generates debate among Twitter users Photo: Reproduo / Twitter

A supposed image of the beach also generated a lot of speculation on the web because it was originally an illusion of ethics. The photograph was originally posted on Twitter and generated a series of shares. The original post, created by the user @nxyxm, also contains the complementary phrase "but this is not a painting, but the bottom part of a car door that needs to be repaired.

Muhammad Nayem, owner of the @nxyxm profile, told dnetc that he randomly took a photo of his car and that, after sharing it on Twitter, he realized the illusion of tics created. "At first, few people understood the image, but after so many comments and theories, they were intrigued and started calling it 'the best illusion image of all time", says the Pakistani fashion designer.

New polemic of illusion of ethics is in doubt if animal of the photo cat or crow Photo: Reproduction / TwitterNew polemic of illusion of ethics is in doubt if animal of the photo cat or crow Photo: Reproduction / Twitter

New polemic of illusion of ethics is in doubt if animal of the photo cat or crow Photo: Reproduction / Twitter

The tactical illusion known as Gato or Corvo has even managed to deceive the Google search engine algorithm. The image appeared on a Twitter share by user @RobertMaguire_ that said "This photo of an interesting crow because … actually a cat". The confusion was created when the animal, when posing for a photo, curved its neck causing its ear to assume, in the illusion, the shape of a beak. In addition, one eye was in the same place where the bird's eyes would be.

A closer look could see the illusion without much difficulty. Still, Google's search engine, which uses landmarks, lines and textures to identify images, was misled and presented the photograph as being of a crow. Robert Maguire later admitted that the photo was not his own and that it was only shared from a Reddit forum.

The image of a crow being petted that was shared on Twitter by the service Imgur caused a great deal of confusion because it also contained an illusion of ethics. The impression is caused when the rabbit's muzzle, head and ears assume the profile of a crow. The original post was shared with the caption I think there is something wrong with this rabbit (free translation from English).

According to Dan Quintana, who shared the video, in an interview with the CNET website, the reason for sharing the image on his profile lies in the fact that the illusion "bird / rabbit" is well known in psychology and philosophy studies. Other Twitter users noticed the reference and posted in response to the illustration cited by the scientist. Originally published in a German magazine in 1892, the image has no definite author, but was used by the American psychologist Joseph Jastrow as proof that illusions of ethics can be caused by people's mental activity.

Mathematical problem puzzled Twitter users Photo: Reproduo / TwitterMathematical problem puzzled Twitter users Photo: Reproduo / Twitter

Mathematical problem puzzled Twitter users Photo: Reproduo / Twitter

The equation 82 (2 + 2) published on Twitter, caused controversy when users debated about the real mathematical result in resolution. In fact, there are two solutions for the account and it was this detail that made the post go viral quickly among users of the microblog. According to Mike Breen, a spokesman for the American Mathematical Society, the way the problem is written can cause common confusion in mathematical situations. As it is written, it is ambiguous. In mathematics, there are often ambiguities. Mathematicians try to make rules as precise as possible, said the expert.

Breen also explains that the way the person learned mathematics is also fundamental to solving the equation. The PEMDAS and BODMAS methods differ in the order of multiplication and division. Thus, a supporter of the PEMDAS scheme would reach result 1, while using the BODMAS method the answer would be 16.

Sco Paa Tu Manaa Photo: Reproduo / YouTubeSco Paa Tu Manaa Photo: Reproduo / YouTube

Sco Paa Tu Manaa Photo: Reproduo / YouTube

Sco Pa Tu Manaa is an expression originally used in the music Daavi Ne Ba, released by the Ghanaian singer Kawoula Biov in partnership with the artist Patapaa, known for creating meaningless expressions in his raps. The curious phrase went viral on Twitter with posts that accompanied nostalgic photos or that refer to everyday situations, as a synonym for expressions, what does that remind you of? and what is your opinion on that?

However, on the Know Your Meme website, Sco Pa Tu Manaa informs that the expression has Hawaiian origin and that its meaning of I will hit you. Google Translate offers translation as a result: you will find it interesting. Still, users of Twitter assimilated the phrase as gria that has meaning what is your opinion about it? or what does that refer you to ?.

Instagram quiz game: how to download and use the filter

Instagram quiz game: how to download and use the filter