If you need a reminder today that we’re all just sheets of skin that are slaves to the strange organ encased in our skulls, here’s one – this GIF of an optical illusion that’s really just two dots.
The GIF has been around since early 2018, when Reddit user do23n posted it, along with the following questions:
“2 dots oscillating? Vertically or horizontally? Or 2 dots orbiting? Clockwise or widdershins? Or 2 diagonal pairs of blinking dots with no ‘motion’ at all? Or something else?”
Image Credit: Pixabay
Here’s the thing – you see one of those options first, but as you filter through the others, the dots move whatever way you’re thinking they do. Or at least, that’s how it seemed to me, at first.
The GIF is an optical illusion called the ambiguous quartet, and MIT’s instructions for viewing it are as follows: Stare for 2 minutes. The dots will appear to jump vertically or horizontally, and then after some time, they will probably spontaneously switch directions.
So, without further ado, here it is:
2 dots oscillating? Vertically or horizontally? Or 2 dots orbiting? Clockwise or widdershins? Or 2 diagonal pairs of blinking dots with no "motion" at all? Or something else!? from illusionporn
And, now that you’ve seen it for yourself, we’re going to ruin the magic with some good, old fashioned facts.
What’s actually happening in theGIF is that four dots are blinking in place. The speed they’re blinking is what frazzles your brain into thinking they’re moving – a 2008 study called the phenomenon “perceptual rivalry,” but it wasn’t a new concept even then.
This particular illusion, also called “Stroboscopic Alternative motion,” was first referenced in a 1933 study out of Germany.
The post This GIF Will Totally Mess With Your Head appeared first on UberFacts.

Chaz the Carnataur has made the crossing
and currently resting within a secure compound…
Este es el espíritu de @sanosevillabermejales
Por muy adversas que sean las circunstancias, vamos a sacar lo mejor de ti 

While everyoneelse was hoarding like hell (yung tipong punong-puno ang mga big carts)…
#Repost @science with @make_repost ・・・
the worlds only pink manta ray has been spotted!
The manta ray is known as Inspector Clouseau. He’s 11-foot wide and weighs around two tonnes! It is said that he is the only pink manta ray in the world, and is rarely spotted. His illustrious pink color is due to a genetic mutation similar to albinism •
photographer: Kristian Lane #pinkmanta #pinkmantaray #stingray #science
SHARE 》 ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ 【 相機壞掉了嗎?! 「粉紅色鬼蝠魟」!!!
】 攝影師克里斯蒂安 • 萊恩(Kristian Laine) 在澳大利亞大堡礁的最南端埃里奧特夫人島(Elliot Island)上自由潛水,當時一隻明亮的粉紅色鬼蝠魟滑翔而過,他原先認為自己的相機故障,後來意識到這是隻真實地存在的「Pink Manta Ray」,真的超級幸運的啦!

宮主也好想親眼目睹一次粉紅色的Manta Ray 
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龍洞潛浮期