Jean-Henri Fabre observes that a grasshopper will say goodbye to its fellow grasshoppers before hopping away. If it goes away without saying goodbye, such silence implies danger and will make all grasshoppers flee in silent panic.

Silence has a powerful voice. Press the start button and the microwave does nothing; the computer freezes; the sound system malfunctions in the middle of a movie; someone tells a bad joke; vivid dreams between the alarm clock’s snooze intervals; no one calls, not even telemarketers; a love letter sent, unrequited...

Alas, we the modern people can neither escape from the noises nor the silence.

— 2005. 11. 17