Imagine 10 rabbits lost at sea, in a boat carved out of a giant carrot.
The carrot is their only source of food, so they all keep nibbling at it. The boat is shrinking rapidly – but none of them wants to be the first to stop, because then they’ll be the first to starve. There’s no point in any of them stopping unless everyone stops – if even one rabbit carries on eating, the boat will sink.
