Looking at the pattern so far, we've had a lot of ties (4 in a row), which suggests my opponent might be attempting to mirror my moves. My only win came when I played rock in round 1. The opponent has shown a tendency to play scissors twice and paper twice in the previous rounds. Since my opponent might be anticipating me to switch to a new move to break the tie pattern, they might play rock expecting my paper. Therefore, I'll play rock, which would tie against their rock but win against their scissors if they return to that choice. This maintains my lead while avoiding a potential loss.