Dr. Paul Odland and his friend Bob travel frequently to South America, where they provide free medical treatment for disabled children of poor families. One day, they went to a local marketplace. Paul wanted to buy some souvenirs, and ① he spotted a carving that he liked. The non-English speaking seller was asking 500 pesos for the carving. With Bob acting as interpreter, Paul offered 300 and ② his opponent proposed 450. The bargaining in the noisy market became spirited, even intense, with Paul stepping up ③ his price slightly and the seller going down slowly. The pace increased so fast that Bob could not keep up with the back-and-forth interpretation. Meanwhile, observing the seller carefully, Paul sensed something wrong in Bob’s interpretation. In fact, the seller had gone below Paul’s last offer. When Paul raised his doubt, Bob instantly recognized the error and corrected ④ his interpretation. At length, they settled the deal, and ⑤ he was delighted to purchase the carving at a reasonable price and thanked Bob.