Long TextExercici 26 de 74

The Kryptos sculpture at CIA headquarters remains among the world's most famous unsolved codes despite over 22 years of hints from its creators. The sculpture's centerpiece, hidden away in a courtyard, features curved copper plates that together stand nearly 10 feet tall. Carved out of the plates with a jigsaw are…

• What does the writer suggest in the third paragraph?
• What impression does the writer give of the local traffic?