Clarity and precision are what one tries to strive for in achieving semantic health. In other words, clarity and precision foster communication. But oddly, perhaps even paradoxically, it is ambiguity that fosters communication in aesthetic experience. To the extent that a work of art is unambiguous, precise, and as clear in its meaning as one could hope for, to that extent, it is not art at all.
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The greatest changes involve not a transformation of the form of language use but a diminishing of the very role that language itself plays within the culture. With radio and other audio media dealing primarily in music, and visual media using images, music, and sound effects, at the expense of even spoken language, a great part of our public discourse is being conducted in symbolic forms which are less amenable to conscious reasoning and whose semantics have barely begun to be studied.