The Taking of Precautions: s 5B(1)(c)
47 I respectfully disagree with the primary judge's conclusion (see paragraph [30] - [31] above) that reasonable persons in the position of the appellants would have taken precautions against the foreseeable risk of injury to Cameron by ensuring that the bunk bed had a ladder and guard-rail.
48 First, a duty of care "imposes an obligation to exercise reasonable care; it does not impose a duty to prevent potentially harmful conduct" (RTA v Dederer at [18]). Accordingly, the fact that what was an undoubtedly tragic accident might, or even would, not have occurred if the bunk bed had had a ladder and guard-rail does not answer the question of whether there was a failure by the appellants to take reasonable care (see for example Derrick v Cheung [2001] HCA 48; (2001) 181 ALR 301 at [13]).
49 Secondly, in my view the "probability that harm would occur if care were not taken" here (see s 5B(2)(a)) was, as it was in RTA v Dederer, a very low one (at [61]). Cameron was a child of 10 years of age who appears to have been of at least normal strength and agility (see [23] above). Although he was a high spirited child, the evidence did not suggest he was other than in the range of normality in that respect (see [21], [23] above). Eight months after the accident he was measured by a doctor to be 1.436 metres in height. Even though he would have grown somewhat in the period between the accident and when he was measured, his height at the time of the accident would not have been much different to the height off the ground of the top of the mattress on the top bunk upon which he was sitting immediately before the accident occurred (see [11] above). As he was sitting on the edge of the bed with his legs dangling down and as the lower part of his legs can be assumed to have been at least 30 centimetres in length, his feet would only have had to drop little more than 1 metre for him to be standing safely upon the floor. The risk of a normal 10 year old child not being able safely to negotiate a descent from such a low height without using a guard-rail or ladder was in my view very small indeed.
50 Ordinarily one would expect a child of that age to descend simply by easing his or her backside off the bed and jumping the short distance to the floor. This was the way that Mrs Shaw saw the boys who used the top bunk get down from it (see [21] above). The bunk bed in question (and the other bed that the appellants owned) had been in use for more than six years without any apparent problem, despite, as Mrs Shaw said, there being many children frequently in the house (see [23] above).
51 Further, the risk of an accident occurring was considerably lessened by the ability of children to use the end of the bed to assist them to climb up on, or down from, the top bunk. Mrs Shaw said that the boys "always" used the end of the bed to climb up, although she later qualified this statement by saying that Joel "would just sort of lift himself up onto it" (see [22] above). Cameron said that on each occasion prior to the accident that he had been on the top bunk he had used the end of the bunk to get up and down (see [20] above). The horizontal rails and uprights at the end of the bed were an obvious and readily accessible aid to climbing up and down from the top bunk.
52 Reasonable people in the appellants' position would in my view have considered that if, which they would have thought was unlikely, any normal 10 year old using the top bunk had any uncertainty about being unable safely to jump or ease him or herself down, that child would have used the bars at the end of the bed to guide his or her descent, as Cameron had done on previous occasions. The bars at the foot of the bed would have been no more than one to one and a half metres away from the reach of a child such as Cameron, even one who was sitting, as Cameron was, towards the head of the bed. The child would have to move only a short way sidewards from his or her position to enable him or her to grasp the bars.
53 Thirdly, the prospect of Cameron, in jumping down not much more than one metre, suffering as serious an injury as he did suffer, as distinct from an injury such as a sprained ankle or even broken leg or broken arm, would in my view have been seen by reasonable people in the appellants' position as bordering on remote.
54 In these circumstances, I do not consider that reasonable persons in the position of the appellants would have responded to such risk as there was by installing a guard-rail on, and ladder to, the top bunk. The question of what precautions would have been appropriate to take to guard against any risk of harm if Cameron had been asked to sleep on the top bunk, if Cameron had been younger than 10 or if the top bunk had been higher does not arise in this case. Consideration of the magnitude of the risk and whether precautions would have been taken by reasonable people to deal with such risk must of necessity occur by reference to the particular circumstances of this case, including what the appellants knew of Cameron.
55 The respondent's case is not assisted to any significant extent by the fact that the bunk bed, when acquired by the appellants, had a guard-rail and ladder that the appellants subsequently removed. Mrs Shaw gave explanations for their removal and non-repair or replacement (see [16] - [18] above) that I do not consider to be unreasonable in the context of the use of the bed by someone such as Cameron, at least where he was not asked to, and did not, sleep on the upper level.
56 It is a regrettable but inevitable fact of life that dangers still exist in homes, and other places, despite reasonable care having been taken by those in control of such places. The decision in Jones v Bartlett is an illustration of this. In that case an adult son of tenants of a house sustained injuries when he accidentally walked into an internal glass door. Despite the fact that the occupiers could have installed stronger glass that would not have shattered, the majority of the High Court held that the defendant occupiers had not been negligent in relation to the condition of the premises. One of the members of the majority, Gleeson CJ, at [24] quoted with approval the following oft-cited observations of Mahoney JA in Phillis v Daly (1988) 15 NSWLR 65:
"There are dangers on any premises. A room may have a desk or a table. There is a danger that, if I fall, I will hit my head on it and my skull will be fractured. If the desk or table were not there, I would suffer little or no harm. And the danger is obvious: people do slip and fall. And the injury may be serious. But the obvious foreseeability of such an injury and its seriousness does not involve that, if a person falls and hits his head on a table, there must have been a breach of duty by the occupier of the room. And this notwithstanding that people may live without tables and that tables may be easily removed" (at 74).
57 To similar effect were the observations of Gleeson CJ in Neindorf v Junkovic [2005] HCA 75; (2005) 80 ALJR 341 at [7] - [8] and Bryson JA in Doubleday v Kelly at [17].
58 As with the issue of whether there was a "not insignificant" risk (see [46] above), I respectfully disagree with the primary judge's reliance upon the Australian Standard (see Judgment [88] quoted in [30] above). As there is no basis for expecting reasonable persons in the appellants' position to have been aware of the contents of the Standard or of the ACCC publication that referred to it, I do not consider that those matters can be taken into account in assessing how reasonable persons would have responded to such risk as was foreseeable. The use that Gleeson CJ made in Jones v Bartlett of relevant Standards was different. In that case the glass door complied with the applicable Standards (namely those that were in force at the time the house was constructed). That fact was referred to by Gleeson CJ as supportive of the view that the occupiers did not act unreasonably in not ensuring that the glass was stronger (at [22] - [23]): This did not involve (as it would here) requiring defendants to comply with rules or guidelines of which they had no reason to be aware (compare at [187] per Gummow and Hayne JJ). Rather, it was the use of the documents as a means of confirming the reasonableness of the occupiers' conduct.
59 The correct approach in considering what precautions a reasonable person would take in a case such as the present is in my view that described by the English Court of Appeal in Perry v Harris [2008] EWCA Civ 907. That case was concerned with a severe head injury suffered by an 11 year old boy on a children's "bouncy castle". The Court said:
"36. In considering the precautions that should reasonably have been taken in relation to the bouncy castle the judge had regard to the contents of the Health & Safety Information Sheet and the BIHA standard conditions of hire, which he commented were 'instructive'. We have concluded that there is force in Mr Eklund's submissions that the judge should not have attached significance to these documents. What he should have done was to identify the standard of care required in the circumstances of this case on the basis of the facts of which the defendant knew or ought to have known. These could not include the contents of documents that the defendant neither saw nor ought to have seen".
60 In considering the precautions, if any, that a reasonable person would have taken to guard against the relevant risk of harm, s 5B(2)(c) requires "the burden of taking precautions to avoid the risk of harm" to be considered. The fact, as his Honour held, that precautions could here have been taken with only minimal expense (see [31] above) is a factor in favour of the respondent's case. It is however not determinative and in my view is not of great significance in a case such as the present where the probability of harm occurring and the likelihood of any harm being serious (see ss 5B(2)(a) and (b) and the discussion above from [49] - [53]) were both very low.
61 The other factor mentioned in s 5B(2) is "the social utility of the activity that creates the risk of harm" (paragraph (d)). Contrary to the appellants' submissions, this is not of significance in the present case. As pointed out by Ipp JA (with the concurrence of Spigelman CJ and Tobias JA) in Waverley Council v Ferreira, this paragraph "simply gives expression to the idea that some activities are more worth taking risks for than others" (at [50]). His Honour referred to the example given in the Review of the Law of Negligence Final Report, (September 2002) of "an emergency vehicle … speeding an injured or sick person to hospital" (ibid). The present is far removed from such a situation. There was no circumstance in this case that would have justified the taking of a greater risk than that considered appropriate after taking into account the factors to which reference has been made above, principally, the probability of harm occurring, the probability of any injury being extremely serious and the absence of any significant burden of taking precautions.
62 It follows from the views that I have expressed above that the appellants did not fail to act in the manner in which reasonable people in their position would have acted. They accordingly did not breach the duty of care that they owed to Cameron and are not to blame for the tragic accident that occurred.