So we've suffered through categorizations
into jurisdictional error and non-jurisdictional error, legislative, administrative, quasi-judicial and judicial decisions, categories of correctness, reasonableness and patent unreasonableness and, now, categories of correctness and reasonableness.
Despite Bastarache and LeBel JJ's description of the distinction between
jurisdictional and non-
jurisdictional errors (and the courts approach to determining which category a given
error fell
into) as «formalistic» and «artificial» (at [43]-RRB-, the way this distinction has developed in Australian law in recent decades in fact shares much in common with the standard of review analysis described in Dunsmuir.