Cloe says she hears Yanny, while the replies to her tweet - which has now been retweeted more than 25,000 times - are flooded with people arguing.
If you listen to a word over and over and you're only given two choices, your brain immediately takes away all other choices and elevates the perception of only those two, Grimes explains.
So, is it "Yanny" or "Laurel"?
'I hear Laurel and everyone is a liar, ' one person commented on Roland's post while another wrote: 'ARE YOU SERIOUS. Designate a spot in the center of a quadrant, and its sound would be unambiguous. Depending on their ears or hearing strategy, or the quality of the equipment they're listening through, different people are being more influenced more by lower or higher frequency information.
Science, as usual, has an explanation.
Ellen DeGeneres said: "Literally everything at my show just stopped to see if people hear Lauren or Yanny". Now, people are wondering what magic is at work again with an audio recording that sounds like it's either saying "Yanny" or "Laurel".
WGNO meteorologist Jason Disharoon said the difference in perception comes from the different pitches people are accustomed to hearing.
Believe it or not, as of this writing the world is divided over what they hear and it's even causing some people to halt their everyday lives to argue their point.
When a sound is not quite one thing and not quite another, the brain will shift it into a category.
But also, if you heard Laurel from the beginning you get to rub it in everybody's faces, and that's what really matters.
So the only right answer here is that there isn't one. As a result, "your brain makes all kinds of predictions" about what it thinks you're hearing, he said...