"the needs of the moment take precedence over thoughts for the future"

   In the book's first edition the disappearance of Sancho's mule was left un-narrated, the animal simply present at one moment and gone the next, before later reappearing just as mysteriously.  This is the most notable of various apparent errors throughout the text, although some argue they are in fact an ingenious element of its satire on the chivalric romances, many of which were riddled with narrative inconsistency.  This scene of its theft by ungrateful galley slave Ginés de Pasamonte however, hastily-inserted for later editions, suggests that this was a genuine oversight either on Cervantes' part or that of his printers, as Sancho himself helpfully surmises in Part II (See note to page 510).