How does Runescape detect bots
Now I don't want to know how to make a bot or where to get one. I'm just curious, how does runescape detect bots? I know auto bots that require you to use F1-F12 are easy to detect, but what about the ones that make your actions seem human. My little cousin was using an auto miner to raise his level, and I looked at it for a while. The button clicks worked at human speed, it responded expertley to random events, it clicked random spots on the rocks and items, and on top of that he was talking to other runescape people. How was he detected, I don't play runescape or create bots for runescape. I'm just curious to how jagex could detect something that well made.