(1) The rule is intended to apply only to cases which are really not arguable and not to cases where under the previous practice demurrer would have been the proper course: Packard v Transport Trading and Agency Co Ltd [1912] WALawRp 44; (1912) 14 WALR 191 per Burside J at 195.
(2) On the application, not only must all the facts alleged in the statement of claim be accepted as true, but it must be taken for granted that on all other points the pleading is unassailable: Niven v Grant [1904] VicLawRp 14; (1903) 29 VLR 102 per Holroyd J at 106;
(3) Great care must be exercised to ensure that the plaintiff is not improperly deprived of his opportunity for the trial of his case by the appointed tribunal: General Steel Industries Inc v Commissioner for Railways NSW [1964] HCA 69; (1964) 112 CLR 125 at 130.
(4) The rule should not be reserved for those cases where argument is unnecessary to show the futility of the plaintiff's claim. Argument, even extensive argument, may be necessary to demonstrate that the plaintiff's case is so clearly untenable that it cannot succeed: General Steel Industries Inc v Commissioner for Railways NSW [1964] HCA 69; (1964) 112 CLR 125 at 130.
(5) As a general rule, a plaintiff is 'entitled... as of right to have his case heard, to have the facts found and then to argue the question of law as it arises before the trial judge upon the facts as found. It is only in cases in which it can be seen from the outset that, however the facts be found, there is no basis for the legal conclusion contended for by the plaintiff that the pleading should be struck out: Dalgety Australia Ltd v Rubin (Unreported, WASC Full Court, Lib No 5485, 24 August 1984, per Burt CJ).
(6) A court at first instance should be careful not to risk stifling the development of the law by summarily rejecting a claim where there is a reasonable possibility that, as the law develops, it will be found that a cause of action will lie: Hospitals Contribution Fund of Australia v Hunt (1983) 44 ALR 365 per Master Allen.