Anger can lead to evil vs. Anger must lead to evil.
Not what we're discussing.
Exactly what we are discussing. Brin explicitly acknowledges the first point - he's rejecting the second point.
How is my example - chosen from the very time period and milieu that Brin himself chose - not a 'single example of that happening ever'?
That's not a charitable reading of that point. In the real world, there are lots of different ways to be evil. In Jedi-land, evil = Sith.
Annakin opposes the Sith. Then he feels strong emotions (love of Padme). Then he becomes Sith. Not extremist-opponent-who-is-just-as-bad.
Opposing Nazis does not lead one to becoming a Nazi. Of course, in the real world, Nazi isn't the only way to be evil.
In fairness to Lucas, Anakin's love of Padme isn't what converted him; it was Mace Windu's disregard for the morality the Jedi professed to follow.
I regard the Jedi versus Sith as less "Good versus evil" and more "Principle Ethics versus Pragmatist/Utilitarian Ethics" - Anakin reluctantly embraced Principles until he saw that the Principles were ineffectual; even its adherents would ultimately choose pragmatism. It's kind of implied, in-canon within the movies (the books go further in vindicating the SIth still), that Sidious' master might not have been evil, per se; he sought to end death.
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