Google Economy identifies the concept that the value of a resource can be determined by the way that resource is linked to other resources. It is more complex than search ranking, and broader than interlinked web pages, though it draws meaning from both.
Poetry can be differentiated from prose, which is language meant to convey meaning in a less condensed way, using more logical or narrative structures. This does not imply poetry is illogical. Poetry is often created from the desire to escape the logical, as well as expressing feelings and other expressions in a tight, condensed manner. English Romantic poet John Keats termed this escape from logic Negative Capability.
The definition of music as sound with particular characteristics is taken as a given by psychoacoustics, and is a common one in musicology and performance. There are observable patterns to what is broadly labeled music, and while there are understandable cultural variations, the properties of music are the properties of sound as perceived and processed by humans.
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