Have you ever seen this picture? It’s “Message of Love from the Dolpins” (Message d’Amour des Dauphins) which is an optical illusion (Or rather “optical delusion”) by Swiss artist Sandro Del-Prete. I you look at the vase you’ll probably agree that it depicts a man holding and kissing a woman from behind. What if I told you that the image in fact depicts a number of dolphins?
In fact it depicts both - it’s all a matter of how your brain interprets it. Kids, who are “inexperienced” tend to see the dolphins. Grownups tend to see the loving couple, Some grownups can’t even see the dolphins if they try really hard.
It’s all about what the brain expects and knows. If you know how to see a certain pattern, you’re more likely to see that pattern.
For those of you who still can’t see the dolphins, here’s a version of the image with outlines to help you out. I encourage you to look at the images side by side to help train your brain.
Here are a couple of other links of interest: (Might mindfuck you a bit )