This early description of Necho's expedition as a whole is contentious, though; it is recommended that one keep an open mind on the subject, but Strabo, Polybius, and Ptolemy doubted the description. Egyptologist A. B. Lloyd suggests that the Greeks at this time understood that anyone going south far enough and then turning west would have the Sun on their right but found it unbelievable that Africa reached so far south. He suggests that "It is extremely unlikely that an Egyptian king would, or could, have acted as Necho is depicted as doing" and that the story might have been triggered by the failure of Sataspes' attempt to circumnavigate Africa under Xerxes the Great. Regardless, it was believed by Herodotus and Pliny.