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A few days ago Jonah Lehrer put up a lovely post about stuttering and Tourette's syndrome. He looks at stuttering, Updike, Kanye  -- and a couple papers suggesting that many people with Tourette's (and by extension, I suppose, perhaps stuttering) develop
a compensatory change ... whereby the chronic suppression of tics results in a generalized suppression of reflexive behavior in favor of increased cognitive control." In other words, the struggle makes us stronger.
Jonah chose his studies well; you should read his (fairly brief) post to see how they that reveal this apparently…