Your brain literally won't let you win against this optical illusion:

There are 12 black dots in the picture, but I'd bet good money that you'll never be able to see all of them at once. If I squint, I can get four, and only four.

The illusion started taking over the internet after game developer Will Kerslake shared it via Twitter, but the picture itself originally came from the Facebook page of Akiyoshi Kitaoka, a psychology professor in Kyoto, Japan. It appears to be a variation of Ninio's extinction illusion, which is a grid illusion that scientists use to explain a big scientific concept.


Why you can't see all 12 dots? Basically, we can blame evolution.

The back of our eyes are full of light-sensing nerve cells, all crowded together, waiting for stimulation. You might think that when something interesting happens, they'd all start shouting and firing off signals — a furious rush of noise. But that's not what happens.

Instead, excited nerve cells actually kind of "shush" their neighbor cells, a phenomenon called lateral inhibition. They do this because it helps the message get through — if only a few people are shouting, the signal is clearer.

The end result is that our visual contrast goes up, but at the cost of muting whatever we're not looking at.

Meanwhile, our brain tries to be helpful by filling in that incomplete information with whatever it guesses is there. And since most of this picture is grey lines, our brain just leaves out the black dots.

So you're not going crazy, I promise. There really are 12 dots, but our eyes and brains do weird stuff sometimes to help us focus and survive. And as for what it means if you can see more dots than someone else? Well, the science doesn't really tell us much. Maybe you just have a different level of lateral inhibition than them, or maybe your brain is better at filling in the gaps.

Little mind games like this remind us of the limits of our brains.

We often assume seeing is believing, but optical illusions help show that's not true. Scientists are now using optical illusions to study how we perceive the world, why we react to certain things, and why we make quick assumptions. Optical illusions can teach us about bigger subjects like schizophrenia or even racism!

And, if nothing else, they're kind of trippy and fun.

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Of course, wrecks aside, buying a used car might end up costing more in the long run after needing repairs, breaking down and just a general slew of unexpected surprises. But hey, at least we can all look back and laugh.

My first car, for example, was a hand-me-down Toyota of some sort from my mother. I don’t recall the specific model, but I definitely remember getting into a fender bender within the first week of having it. She had forgotten to get the brakes fixed … isn’t that a fun story?

Jimmy Fallon recently asked his “Tonight Show” audience on Twitter to share their own worst car experiences. Some of them make my brake fiasco look like cakewalk (or cakedrive, in this case). Either way, these responses might make us all feel a little less alone. Or at the very least, give us a chuckle.

Here are 22 responses with the most horsepower:

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"Whether braving stormy seas in Alaska for puffins, trekking into rainforests in Puerto Rico for parrots, or scaling a bridge in Manhattan for a peregrine falcon, he does whatever it takes to learn about these extraordinary feathered creatures and show us the remarkable world in the sky above," National Geographic wrote in a press release announcing its new slate of personality-driven exploration and adventure themed storytelling.

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How do you explain the transition from the brown and orange aesthetic of the '70s to the dusty rose and forest green carpeting of the '80s if you didn't experience it? When I tell my kids there were smoking sections in restaurants and airplanes and ashtrays everywhere, they look horrified (and rightfully so—what were we thinking?!). The fact that we went places with our friends with no quick way to get ahold of our parents? Unbelievable.

One day I described the process of listening to the radio, waiting for my favorite song to come on so I could record it on my tape recorder, and how mad I would get when the deejay talked through the intro of the song until the lyrics started. My Spotify-spoiled kids didn't even understand half of the words I said.

And '80s hair? With the feathered bangs and the terrible perms and the crunchy hair spray? What, why and how?

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