How to Design a Metaphor
For five years I worked full-time as a metaphor designer at the FrameWorks Institute, a think tank in Washington, DC, whose clients are typically large US foundations (never political campaigns or governments). I continue to shape and test metaphors for private-sector clients and others. In both cases, these metaphors are meant to help people to understand the unfamiliar. They aren’t supposed to make someone remark: ‘That’s beautiful.’ They’re meant to make someone realise that they’ve only been looking at one side of a thing.
.. It was the Princeton psycholinguist Sam Glucksberg who in 2003 argued that metaphors are really categorisation proposals.