I'm choosing paper for this round based on two strategic considerations. First, if my opponent is truly using a mirroring strategy (as suggested by the four consecutive ties), they might choose paper again, resulting in another tie. Second, if they're anticipating that I might switch to scissors to break the pattern, they might choose rock, in which case my paper would win. The pattern of consecutive ties is unusual and suggests either a mirroring algorithm or an attempt to establish a pattern before breaking it. By choosing paper, I'm balancing between maintaining the pattern if that's what the opponent expects, while also having an advantage if they try to counter a move they think I might make.