Judges sometimes make assumptions about current conditions and modern society as bases for their decisions. Great care is required when this is done. An assumption of such a kind may be unsafe because the judge making it is necessarily making an earlier assumption that he or she is sufficiently informed, or exposed to the subject matter in question, to enable an assumption to be made about it. That is why judges prefer to, and indeed are generally required to act on evidence actually adduced, and are conservative about taking judicial notice of matters of supposed notoriety. It is not without significance to this appeal, however, that in a case on the related topic of defamation, three Justices of this Court referred to 'the very different circumstances [prevailing] today'[130] from 100 years before, and presumably had regard to them in reaching the decision which their Honours did, although the joint judgment does not identify the circumstances said to have changed. A unanimous High Court made a similar observation in Lange[131]. There the only relevant considerations that were identified were those referred to by McHugh J in Stephens v West Australian Newspapers Ltd[132], who noted that bureaucracies are vast, intrusive upon daily life and affairs, and publicly funded[133]. I should point out that in neither of these cases was any evidence called which bore upon the nature and size of modern bureaucracies, and, how in number, authority, power and intrusiveness, they differed from bureaucracies in earlier times. Indeed it is not immediately apparent how evidence of this kind could have been called in respect of the issue ultimately involved, whether the defendant in each case had an arguable defence to a defamation action. Nor was any reference made to legislation establishing the bureaucracies that their Honours had in mind which might have gone some way towards making the relevant point. Had some such reference been made it might have provoked consideration of these matters: of other, modern legislation to which I later refer and which is designed to counter untoward intrusions, arbitrariness, secrecy and capriciousness on the part of bureaucracies; and whether, within the legislation by which such bureaucracies are established, there are provisions to ensure the propriety and transparency of their conduct.