In the works of Arthur Conan Doyle, particularly in the Sherlock Holmes series, the narrative often intertwines a keen sense of observation with rich character insights. One notable aspect is Holmes’s ability to deduce a person's past or experiences through subtle clues, as evidenced in his remark about Afghanistan, suggesting he can discern a person's journey simply from their demeanor or attire.

This level of perceptiveness highlights Holmes's remarkable skills and the broader themes of knowledge and mystery within the stories. Doyle’s writing not only captivates readers with thrilling plots but also encourages them to engage with the character's thought processes, leaving a lasting impression on the detective genre.