Space to check the red light, if the light is blinking you will hear the silence commanding you to do something, and then you did it...
The silence is from the tv show doctor who and are creatures that, once you look away, you forget they ever existed. They can command you to do something while you look at them and when you look away, you will do that thing. In the show they used a light that they could press to record the sound. If the light was blinking, it meant the sound was being recorded. If you pressed it again, you would hear all sounds from the moment you saw the silence, including what they ordered you to do, and then, creepily, you actually did it thinking you decided yourself to do it... I really messed up a bit and sometimes, after you click, it will lag for an absurd amount of time (a couple of minutes). If anyone can make it any more efficient, please do!