Agreed. The prequels have flawed execution, but imo a good base. It’s the reverse with the sequels that are mostly style over substance, chasing some pretty shots regardless whether it makes for a good movie. And I take the former over the latter any day. Especially if we remember that Lucas asked other directors to make them.

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That might certainly be one factor, but my intuition is that the primary driver is still todays diet. Things like soda drinks that let you consume teaspoons of pure sugar in an instant without appropriate feedback simply didn’t exist in the past.