Based on the previous rounds, there might be a pattern forming in my opponent's play (rock then paper). If they continue with a sequence, they might play scissors next. However, they could also be trying to counter my previous move of scissors by playing rock. By choosing paper, I'm covering the possibility that they'll play rock while also introducing variety in my moves to remain unpredictable. Since I've already played rock and scissors, using paper completes my rotation of all three options and prevents me from establishing an easily detectable pattern.