Optical illusions have always fascinated people, showcasing the power of human perception. A brainteaser on Reddit challenges users to find a hidden man in a picture of a toy store within 10 seconds. It requires concentration and observation skills. The man, Liu Bolin, is a famous artist known for his camouflage art. He blends himself into the background of cityscapes. While finding him may be challenging, practicing and trying more brainteasers can help improve observational abilities.