I agree with Don Cardi about Sonny. Puzo's book made it pretty clear that the defining moment of Sonny's young life was watching his father kill Fanucci. In Falco's book the defining moment is when he sees Tom's father get killed. I get what SB is saying about the timeline. He's right. But if that's the case, Falco shouldn't have had Sonny witness a murder at all. That scene just played too big a part in the original novel to change.

As far as the foreshadowing, from the first time I read the line "the furnace roared," and he mentioned it more than once, I knew where he was going. I think we all did.