According to the dictionary definition, a "metaphor" merely suggests a likeness between one kind of object or idea and another. Thus, the word connotes a less powerful bond of association than that customarily attributed to a model and its correspondent. Our current knowledge of brain function, particularly in relation to behavior, warrants the modesty; indeed, the term, "caricature," occasionally used by the author of this book may serve even better. This proposed "method of metaphors" implies flexible use of analogy, i.e., assertions such as the following can be advanced without any fear of commitment to "nothing but" projections and without much concern for the degree of current acceptance: "Humans are computers/machines." "Humans are animals." "Memory is a hologram." And even "Neurons are people." These are all examples of metaphors examined or referred to in this book.