Though his staff is often confused by the way he runs the office, I've found that there's 'method in his madness'.
The book lacks 'method'. [=the book is not arranged in an orderly way]
He claims to have developed a new 'method' for growing tomatoes.
(..) Captain Rogers will escort you to the unrestricted area, Doctor. Thank you. Dr. Nash, follow me, please. None of those who said they don't like the method... ...have told us any other method they could use that would be effective. - It's Dr. Nash. - All right. - Thank you, sir. (..)2001 A Beautiful Mind