Looking at the pattern of previous rounds, my opponent has recently adjusted their strategy, winning with paper against my rock in round 7. There's a good chance they might play paper again, expecting me to stick with rock. I'm currently in a strong position (5-1), so I can afford to make a strategic choice based on countering their potential paper play. By choosing scissors, I can potentially counter their paper if they repeat their last move, while also breaking any predictable pattern they might have observed in my play.