Very interesting analysis of how Michael Looks at People. https://www.youtube.com/watch?v=ZAPkRlwkOls

Harlan Lebo, in "The Godfather Legacy," notes that Paramount didn't wan't Pacino as Michael because they thought he was too small and not forceful enough. But FFC spotted that brooding quality that is so often cited in the video you posted. Luckily, FFC persevered and we had our unforgettable Michael.

Al Pacino, short in stature but nothing short! in pulling off and how Pacino nailed Michael Corleone from “That's my family Kay It's not me” war hero to the murderous head of the most powerful Mafia family

Pacino made it seem "our unforgettable" Michael is real not fictional!