 The problem arises because even having established the original meaning of a clause of the Constitution, ""knowing the meaning of these words only takes us so far in resolving current cases and controversies.Due either to ambiguity or vagueness, the original meaning of the text may not always determine a unique rule of law to be applied to a particular case or controversy.While not "indeterminate", the original meaning can be "underdeterminate" (R. Barnett, "The original meaning of the Commerce Clause", text accompanying note 37).