The theory of rational lawgiver uses an assumption of normativity of legal text. The authors propose several definitions to express theoretical possibility and to show real cases of nonnormative fragments of integral (articulated) parts of legal texts and normative fragments of other parts of legal text. Three types of normativity are defined: the broadest, broad, and strict. The notion of normativity is connected with notions of redundancy and uselessness of legal texts. The authors examine in this context five elements constituting legal system: (1) legal provisions ‒ basic element of the integral (articulated) part of a normative act, (2) fragments of legal provision, (3) elements of the non-integral (non-articulated) part of a normative acts, (4) normative acts in their entirety, (5) judgements of the constitutional court as sui generis interventions in the current legal text. The analyze leads to showing four basic types of errors in legal provisions, which are dubbed: “doubles,” “widows,” “orphans,” and “botches.” In closing remarks the authors signal perspectives of formulation of a complex theory of redundancy and uselessness of legal text.