Optical illusion: Spot the hidden number '8'

Optical illusions can deceive us by making us perceive something that isn't actually there. Experts say that only one percent of people can identify the hidden number '8' in an image. Our brains often see what they expect to see, which is known as cognitive resonance. The hidden number blends into the scenery of a cityscape image, making it challenging to find. Practice solving puzzles to improve observation skills.