Readers are challenged to identify an error in an image of a pair standing on a bridge within three seconds. The error is the absence of a river on the other side of the bridge. Readers are challenged to identify an error in an image of a pair standing on a bridge within three seconds. The error is the absence of a river on the other side of the bridge. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle