Three years after the so-called "dress" divided the Internet over what color it was, another benign but up-to-your-interpretation question puzzled social-media users early this week: Was a voice on an audio clip saying "Laurel" or "Yanny"?
Workplaces everywhere ground to a halt on Tuesday as everybody argued whether the robot in this recording says "Yanny" or "Laurel".
It's not as simple as you think; different people have heard different things.
"It's so clearly laurel", quipped supermodel Chrissy Teigen.
Mark Tinkler, founder and chief technology officer of vocabulary.com, told TIME the original audio recording comes from an opera singer contracted to record English language words for the website.
The US Department of Defense made light of the controversy on its Twitter account, with a photo of a US Marine Corps instructor berating a recruit: "I said it's #Yanny, recruit, not #Laurel!"
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The video followed up his previous Yanny-versus-Laurel tweet, which was accompanied by a great gif of himself.
A straw poll carried out among staff in AFP's Washington bureau counted 17 for Yanny, and 14 for Laurel. Your brain is bound to pick out one word or the other given that prompt.
Sluberski says how loud you make the sound can also influence what you hear. He claims if the pitch is shifted, to hear more of either the higher or lower frequencies, people should be able to hear both words.
From the people KLTV polled today in Smith County, 30% said they heard "Yanny" and 70% heard "Laurel".
"It is synthesized speech and the output is a little ambiguous", Goetz said. Kimmel concluded that maybe people really do have their own realities and that he might owe President Trump an apology for not believing that his Inauguration crowd was as large as the president said it was.
Some speculated online that the age of the listener might determine what was heard, while others changed the pitch to alter results.
The hairs take sounds we receive and turn them into messages for the brain.