This article explores the misconception that viral advertising is driven by luck, timing, or unpredictable algorithmic magic. It explains how breakout campaigns leave measurable signals long before they peak, including rising engagement rates, amplification patterns, creative duplication, and cross-platform adoption that reveal growing momentum. The article also highlights how tools like Anstrex help marketers identify these early indicators, monitor emerging creative trends, and reverse-engineer viral success before it becomes obvious to the broader market.