The scene sounds reassuringly familiar: neatly styled white hair, a warm smile, a dark green cardigan, and a grandmother resting in a brown chair. The challenge is to spot a single difference between two versions in just ten seconds. Rather than scanning randomly, work from top to bottom. Compare her face and glasses first, then examine the necklace, hands, and buttons. Finish with her skirt, shoes, and the chair, checking corresponding areas for changes in shape, color, number, or position.
If the timer wins, there is no reason to feel
