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A school replaced a long lost-and-found list with photographs grouped by the week each item was found. Students could scan the images before visiting the office. This change reduced unnecessary visits, but it also created a new problem: similar black umbrellas were difficult to distinguish. Staff therefore added a small tag showing the location where each item had been found. That information helped students compare objects that looked alike.

A school replaced a long lost-and-found list with photographs grouped by the week each item was found. Students could scan the images before visiting the office. This change reduced unnecessary visits, but it also created a new problem: similar black umbrellas were difficult to distinguish. Staff therefore added a small tag showing the location where each item had been found. That information helped students compare objects that looked alike.

[주어진 문장] These responses revealed that the color scale was memorable but its meaning was not. A weather museum asked visitors to interpret a map after reading a short label. ① Most visitors correctly recalled which color was darkest. ② However, many could not explain whether darker color meant more rain or greater uncertainty. ③ The museum then rewrote the label to state the comparison before naming the colors. ④ In a second test, more visitors explained the scale correctly. ⑤ The revision improved interpretation without changing the map itself.

A research team asked residents to mark noisy locations on a map. Some marks represented a single unusual event, while others reflected noise heard repeatedly over several weeks. The team therefore added a question about frequency before publishing the map. This distinction prevented one-time events from appearing identical to persistent patterns. Yet it did not show whether the repeated noise came from the same source. To answer that question, researchers compared the time and description attached to each mark.

A community center wanted to know why some participants left a digital course before completing it. (A) Those interviews showed that several users understood the lessons but could not find where to resume after a break. (B) Staff first compared completion records, but the numbers alone did not explain the interruptions, so they interviewed a small group of users. (C) Based on this finding, the center added a visible 'continue from last step' button and then checked whether interrupted users returned.