Law I / The Anatomy of a Legal Norm
Practice question · Fill in the blanks

Complete the anatomy of the norm.

A sentence that prescribes cannot be true or false, only ______. A sentence describing the existence of a norm is a normative ______, and that one can be true or false. Hart calls the rule identifying what counts as law in a system the rule of ______. Kelsen closes the chain of validity with a presupposed ______ norm.

Word bank: valid · proposition · recognition · basic · efficacious · primary

Hints
  1. The first two blanks are the two halves of one distinction.
  2. The last two blanks are the two rival ways of closing the chain.
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A sentence that prescribes cannot be true or false, only valid. A sentence describing the existence of a norm is a normative proposition, and that one can be true or false. Hart calls the rule identifying what counts as law in a system the rule of recognition. Kelsen closes the chain of validity with a presupposed basic norm.

Why

The last two blanks name the same problem and two different answers. Every chain of validity has to stop somewhere; Kelsen stops it at a norm that is presupposed by legal thought, and Hart at a rule that is practised by officials and can be observed. One is a postulate, the other a social fact, and the difference is the whole quarrel between them.

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