Jokes9 mins ago
What is spin
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For more on marking an answer as the "Best Answer", please visit our FAQ.200 years ago, 'spinning a yarn' took on another meaning...ie telling a story. This is an excellent metaphor because any good story needs to have its various strands - characters, incidents, settings etc - effectively wound and bound together. The writer, in other words, has to spin a story the reader/listener will believe. (And the stories covered by the phrase 'spinning a yarn' often were very hard to believe!)
The only recent change - when the word 'spin' is used in connection with politics - is that it is now more often used as a noun rather than as a verb. Thus, we speak of politicians "putting a spin on" their policies; that is, trying to make them convincing for the electors.
The connection between 'spin' and story-telling - especially tall story-telling! - is really quite old, though.
Treacle, I quite like your bowling comparison, actually. The only thing it lacks that 'spinning a yarn' has is a direct connection with 'twisting words'. And that, I think, is the key here. My thanks for your kind comment, by the way.