The most effective way to make someone believe in something is by letting them see what you mean. Visual evidence is the best source of reliability. But what if your brain and eyes are seeing one thing, and it actually is another? These images are called optical illusions and though we may think that these illusions are mostly created on purpose, you’d be surprised at how much of them are, in fact, unintentional at all!

Read on and see 50 of these illusions that will surely lead you to wonder if you are seeing things right.