Coolness is an admired aesthetic of attitude, behavior, comportment, appearance and style, influenced by and a product of the Zeitgeist. Because of the varied and changing connotations of cool, as well its subjective nature, the word has no single meaning. It has associations of composure and self-control (cf. the OED definition) and often is used as an expression of admiration or approval.
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There’s lots to love at CES each year, but there’s always that one product that’s just to cool to ignore. This year, ...