Michael makes mention of Fredo's "good heart" and there have been many postings on these boards to the effect that Fredo was all heart and no brains, but what evidence is there of his having such a "good heart?" Certainly his heart is in the wrong place when he does things like allow his father to walk across the street unaccompanied; when he bangs cocktail waitresses two at a time; or when he blows up at Michael.

In which scenes do we really see that Fredo did have a good heart... or could it just be a myth?