Form follows function: When the function changes, drop the form

The purpose of a fish trap 
is to catch fish,

And when the fish are caught

The trap is forgotten.

The purpose of a rabbit snare
Is to catch rabbits. 

When the rabbits are caught

The snare is forgotten.

The purpose of words
 is to convey ideas.

When the ideas are grasped

The words are forgotten.

Where can I find a man
 who has forgotten words?

He is the one I would like to talk to.”

- Chuang Tzu