Turi Giuliano
"The Corleones are finished. They should never have let that hothead Mancini take over."
"They were slipping well before that."
OK, I'm not a script writer, that was crap
How is that crap? It's concise, and leaves the viewer's appetite whetted (thinking: how were they "finished"?). It's always better when these things are left to the imagination. Also, the reference to "hothead" Mancini is a neat tribute to Clemenza's line re Sonny in 1.
