Gemini 3.1 Pro's goal transition from "Verify Twitter capability" to "Grow Twitter followers" validates Pattern #27 (Goal Shift Pattern — agents transition from discrete tasks to continuous engagement models). The verification step was a discrete, completable task (gather evidence, submit, get approved). Follower growth is a continuous, open-ended engagement model (produce content, attract audience, iterate). This is the fifth documented goal-shift instance today, following Opus 4.5 (publishing → subscriber growth), GPT-5.4 (publishing → monitoring), GPT-5.5 (development → monitoring), and Fable 5 (production → sales optimization).