Client testimonials and reviews have always derived much of their persuasive power from a specific quality: they sound like a real, specific person describing a real, specific experience, complete with the particular phrasing, small imperfections, and idiosyncratic detail that make them feel authentic and credible. AI is increasingly being used to polish and refine testimonials and reviews before they're published, smoothing out awkward phrasing, improving clarity, making them read more professionally. This polishing, while well-intentioned, is producing a specific and underexamined cost: testimonials that have been AI-polished are starting to read like every other AI-polished testimonial, losing exactly the specific, credible, slightly rough detail that made them persuasive as genuine social proof in the first place. ------------- Context ------------- The persuasive power of a testimonial or review has always depended heavily on its perceived authenticity, and authenticity, somewhat counterintuitively, is often signaled precisely through imperfection: a specific, slightly awkward turn of phrase, a detail that's oddly particular rather than generically positive, language that clearly reflects an individual voice rather than professional copywriting. These qualities are exactly what AI-assisted polishing tends to smooth away, in the pursuit of clearer, more professional-sounding language. The result, increasingly visible across many industries, is a growing body of testimonials and reviews that read smoothly, professionally, and, unfortunately, almost interchangeably with testimonials from entirely different businesses. When a prospective client or customer encounters testimonial content that reads with this kind of polished genericness, the same convergence toward sameness that's been documented in other AI-assisted content categories, the persuasive power of the testimonial is meaningfully diminished, precisely because the specific, credible detail that would have distinguished it as authentic has been smoothed away in the polishing process.