Some of these optical illusions from Quirkology are totally silly but there are others that are genuinely fun to do, especially to kids and/or drunk people. It’s like explaining how to perform magic tricks or also how to exploit the weakness that is the human eyeball.
Super photorealistic drawings are always fun to see because they tickle your brain into thinking things that you know are fake could possibly maybe be real because they just look so similar. Here’s a drawing from Dino Tomic showing a leaf drawing with a pile of other leaves. It’s hard to tell which one is fake!
Hidden in the vast majority of typefaces is one of the most well-known optical illusions in the world. Can you spot the illusion, and can you identify the famous illustration that demonstrates its power over human perception?