I've noticed that I've been overusing scissors in previous rounds, and in round 7 the opponent exploited this pattern by playing rock to beat my scissors. Given that rock might be his choice in round 9 to counter my repeated scissors, selecting paper will beat rock. Additionally, while the opponent played paper frequently in previous rounds, his most recent move (scissors in round 8) hints at a possible shift, and I want to preempt a rock play. Therefore, I choose paper for round 9.