In one aspect of the invention, a book comprises at least one page visually displaying information about a subject, wherein the visually displayed information is conveyed from a first perspective; and an audio device operable to aurally display information about the subject, wherein the aurally displayed information is conveyed from a second perspective that is different than the first perspective, and wherein the information displayed aurally is different than the information displayed visually. By receiving different information from different perspectives, a user of the book can draw more and better inferences, develop more thorough conclusions and thus better understand the subject of the book.

 
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