The link lets you see how many times you can click in 10 seconds. Only people with very fast clicking can unlock this achievement (the variable responsible for unlocking this achievement is even called 'autoclickerDetected'). Currently, the rate is 150/10s, which is difficult to achieve legitimately. The exact rate required to earn this achievement has been tweaked multiple times over the development of Cookie Clicker and may be subject to further changes.
