To explain the “idiot” Darwin gives an example:
Two friends are on a frozen lake where they want to make a hole to fish. One has the idea of supporting a stick of dynamite, turn on the fuse and run back as far as possible, but the other observes that if it slips and falls, it remains torn by the explosion.
Then the other suggests to throw at full strength away a stick with the lit fuse. Good idea, so do, forgetting that with them there is the dog that just sees that tube fly up, runs to take it and brings it back.
You can imagine the ending.
Romano Pisciotti: smile !