My thumbnails are safe but analyze: should I make them controversial? Map the controversy level: slightly provocative vs. extremely polarizing. Show me the controversy sweet spot: interesting enough to click, not offensive enough to skip. Calculate: if thumbnails became 30% more controversial, would CTR increase enough to justify potential haters? Give me the controversy calibration: this much controversy = this much attention without backlash. Include: when controversial thumbnails work vs. backfire, how to be provocative without being offensive, and why safe thumbnails are invisible.