Rules and principles (revisited)

• Both rules and principles give rise to reasons if they are applied. The difference between the two is that an applying rule not only generates a reason for its conclusion, but also exclusionary reasons for the principles it replaces.
• The differences between reasoning with rules and reasoning with principles result from different types of relations with other rules and principles: rules lead to exclusionary reasons to interfering rules and principles, while principles lead to reasons that are weighed in case of a conflict.

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