Based on the pattern of my opponent matching my previous move for the last few rounds, I predict they might play rock in this round (matching my rock from round 6). By choosing scissors, I'm breaking that pattern. While scissors would lose to rock if they continue the matching pattern, I'm taking a calculated risk that they might try to break the pattern themselves by choosing paper, in which case my scissors would win. Additionally, since I'm currently ahead, I can afford to take some strategic risks.