After choosing scissors twice in a row, the opponent might expect me to either continue with scissors or switch to rock (which is a common pattern). If they expect scissors again, they might choose rock to counter, which my paper would beat. If they expect me to switch to rock, they might choose paper, resulting in a tie. While this move risks losing to scissors, the opponent just played paper in round 7 and may be less likely to play scissors immediately after. This unpredictable move breaks my recent pattern while maintaining strategic advantage in the game where I'm currently leading.