Drawing on long years at the easel

While computers are more efficient than people at storing information and retrieving it quickly, the human brain's primary strength lies in using the imagination to fill in the blanks when information is missing.

That's why police departments still need people such as Lin Yuhui, an artist who can draw an accurate sketch of a suspect even when security cameras fail to capture a clear image.

Lin's skill lies in identifying clues that enable him to produce an almost faithful likeness, either from blurred photos or camera surveillance footage that shows just 25 percent of a person's face.