Optical illusion: Are you smart enough to spot the hunter in this picture of a bear within 20 seconds? |
Optical illusions are internet gold — those mind-bending images that reveal how your brain plays tricks with colours, shadows, and shapes. Some test your personality, others your speed, but this vintage gem from the 1880s is driving even seasoned puzzlers nuts. Created as a kids’ ad gimmick on trade cards, it dared children to find…