Principle: If one does not criticize a form of behavior in oneself or vow to stop it, then one should not criticize that form of behavior in another.
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Principle:
If you don’t criticize a behavior in yourself OR vow to stop that behavior in yourself → should not criticize that behavior in others
Conclusion:
If Shimada doesn’t vow to stop being tardy himself, he shouldn’t criticize McFeney for tardiness.
We want to learn that Shimada doesn’t criticize tardiness in himself. (If we don’t learn this, then we can’t conclude that Shimada shouldn’t criticize someone else for tardiness, because he might criticize that behavior in himself.)
Which one of the following, ██ █████ █████████ ███ █████ ███████████ ██ ███ ██████████
Both McFeney and ███████ ███ █████████ ██████ ███ ███████ ██████████ █████████ █████████ ███████ ███████████ ███ ████
McFeney is regularly ██████ ███ ███████ ██ ██████ █████ ██████
McFeney often criticizes ███████ ███ █████ ██████ ███ ███████ ███████ ███ ███████ ████ ████ ██ █████ █████ ██████
Shimada criticizes McFeney ███ █████████ █████ ██████ ███ ████ ██████████ ███████ ███ ██████████ ██████████
Neither McFeney nor ███████ ██ █████████ ██████ ███ ███████ ██████████ ███████ ███ █████████ ████████████