In the following question, an idiomatic expression or proverb is highlighted. Select the alternative that best describes its use in the sentence.
He used to live a very disorganized life, but later we realized that there was a method in his madness.
1
You have to be crazy to innovate new things
2
An innovative idea is just a crazy man's fantasy in the beginning
3
There’s a reason behind someone’s strange behavior
4
You must be impractical to have new ideas
5
You must not go by the rules in you want to invent something