Tóm tắt nội dung: 7 Summarizing and Presenting Results `Quite so!' `You see, Lady Swaffham, if ever you want to commit a murder, the thing you've got to do is to prevent people from associatin' their ideas. Most people don't associate anythin' ± their ideas just roll about like so many dry peas on a tray, makin' a lot of noise an' goin' nowhere, but once you begin lettin' em string their peas into a necklace