"Curiously enough, whilst there has been considerable development and a much more liberal approach has been adopted in recent years in the ordering of particulars in negligence actions, other than running-down cases, there is reason to suppose that in the latter type of case the position has remained static. It is comparatively rare for a case to be brought before the Court involving (for example) a claim in respect of dangerous premises, a failure to provide a safe system of work, professional negligence, or the like, in which particulars have not been requested and furnished. It is equally rare for particulars to be requested or furnished in a running-down case. Yet in principle there can be no distinction, and the Court's discretion as to ordering a party to furnish particulars should be exercised on identically the same principle in all cases. The only basis which was suggested to us for the distinction which seems to exist is that in running-down cases there are, prima facie, only two actors, of whom the defendant is one, that accordingly the defendant is to be presumed to know as much about the circumstances as does the plaintiff, and therefore the defendant must show that some special circumstances exist before he is entitled to an order that particulars be furnished to him. This notion is fundamentally unsound, for the reason mentioned above, namely that the function of particulars is to let the party in question know the case he has to meet. It is by no means infrequent that, if particulars are not given, the allegations made by a plaintiff at the trial include matters which, having regard to the defendant's recollection of events, or for any one of a variety of reasons, were not known and could not have been known to him previously.