It is a case where, as I have said, the defendant actually conceded that the trampoline was a danger and that she did owe a duty of care to these children to do something about it. In those circumstances, where such a clear concession is made, in my view, it is difficult for the defendant to maintain there was no breach of the duty of care, even though it might be said, that the fact of a child going onto a trampoline wearing roller skates was not a precise matter about which there could be any foreseeability. It was foreseeable, that the children could very easily go to the trampoline. Indeed it was foreseen, specifically as a possibility by the defendant and she says she took some steps to prevent that. However, simply advising them the night before about the trampoline, would certainly not be an adequate precaution to take in respect of a child of this age.
11 The Trial Judge dealt with a contention that the particular circumstances in which the respondent, using roller skates for the first time, attempted to climb on the trampoline so as to roller-skate on the surface, and in some way fell off and was injured while attempting to carry this out, were not reasonably foreseeable. The actual events as they happened are not the circumstances to which consideration of foreseeability of risk of injury is applied; what is to be considered is foresight in more general terms of risk of injury to a child of seven if she were to use the trampoline without adult supervision: see Chapman v. Hearse (1961) 106 CLR 112 at 120-121, Mount Isa Mines Ltd v. Pusey (1970) 125 CLR 383 at 402, Commonwealth of Australia v. McLean (1996) 41 NSWLR 389 at 403. The Trial Judge was correct to conclude that although, as his Honour said, "Obviously being on the trampoline with roller skates was a significant factor which led to the fall" there was a foreseeable risk of injury if the respondent were to use the trampoline at all without adult supervision. The fact that the respondent wore roller skates when she got on the trampoline is a bizarre complexity but not an important one; the risk that was foreseeable was that the child would not use the trampoline in a competent way and would injure herself by falling off, and that risk was realized.
12 Overall, the Trial Judge's observations mean, in my view, that it was found that a warning against using the trampoline was given to the respondent the previous night, but that this was not an adequate discharge of the duty of care. Honour found that a reasonable person in the position of Mrs Urquhart would have taken precautions against the foreseeable risk of harm to the respondent by preventing the children from going to the trampoline. The Trial Judge's reasons do not state in explicit terms what measures of prevention should have been taken. While it would have been preferable had the reasons spelt them out there is no difficulty in understanding the kind of measures his Honour must have had in mind, particularly as the judgment was delivered at the conclusion, that is the second day, of the hearing. An obvious and effective means of preventing small children from using the trampoline without supervision was to turn it over so that the jumping surface is on the ground, and to fold the legs up. A full articulation by his Honour was not necessary.
13 There was cross-examination of Mrs Urquhart in which it was put to her that she could have stood the trampoline on its side, which would have effectively put it out of use for jumping. Mrs Urquhart's evidence seems to show that she considered doing this and decided against it because of the risk that a child might upset the trampoline while it was standing on its side, and suffer some injury in that way. This was a reasonable response to the cross-examination in its actual terms. It retrospectively seems unfortunate that the cross-examiner did not go further and articulate the next stage of turning the trampoline over completely, but that was so obvious a measure to deal with the risk of the availability of the trampoline to the children that it did not need additional articulation after referring to dealing with the risk by leaving it standing on its side. There was no procedural injustice or lack of fairness to Mrs Urquhart in not confronting her explicitly with that suggestion in the course of cross-examination. Some things are so obvious that they do not need to be dealt with explicitly in cross-examination.
14 There is no highly developed body of doctrine about the application of the law of negligence where children suffer an injury while in the care of parents, or of persons who, for longer or shorter periods, are exercising the responsibilities of parents. See the discussion in the Law of Torts by the late Professor John G. Fleming 9th Ed 1998 at 508 to 510 and see also the case law dealing with negligence liability of schools -Commonwealth of Australia v. Introvigne (1982) 150 CLR 258.
15 The issues relating to the law of negligence, including duty of care, causation and some other principles relevant to this case are as stated in Pt.1A - Negligence - of the Civil Liability Act 2002, which the Trial Judge adverted to. In my opinion his Honour's conclusions were reached in accordance with the provisions of Pt.1A, including the general principles and other principles restated in ss.5B and 5C, and the general principles of causation in s.5D. Although the appellants' counsel pointed out that the Trial Judge did not explicitly articulate every detail of the application of those provisions, it is clear to my mind that his Honour applied them in substance and made no departure.
16 In determining the existence and scope of duty of care, both as articulated in Wyong Shire Council v. Shirt (1980) 146 CLR 40 at 47 (Mason J) and as restated in Pt.1A Div.2 of the Civil Liability Act 2002, it is necessary to come to a decision about the response of a reasonable person in the position of the appellants to the foreseeability of risk of injury; even though there is a foreseeable risk of injury it may be a reasonable response to take no precaution against it.
17 In a domestic situation, the response of a householder occupant to a foreseeable risk of injury to a child for whom the occupant is exercising parental responsibilities (as for a brief period Mrs Urquhart was) necessarily involves acceptance of many foreseeable risks of injury to the child. A house has much furniture and other effects which can cause injury, according to the way children use them; children could climb on tables and fall off, and they could tip furniture over. A household could be full of things which children might foreseeably break so as to cut themselves, drop on their feet, swallow or otherwise cause injury. See the comment in the judgment of the High Court in Thompson v. Woolworths (Queensland) Pty Ltd [2005] HCA 19 at [36]. Counsel for the appellants gave many examples, including the obvious risk that children might leave the premises and expose themselves to danger on the road outside. In his written submissions, counsel wrote: "What were the appellants to do? Short of locking the children in the house (where, it must be remembered, all kinds of potential hazards are present), the children would have had to have been constantly monitored." (Orange 12). This was a contention in relation to supervision, which was not the ground on which the Trial Judge found negligence.
18 A trampoline has characteristics which were not present in counsel's many illustrations, as a trampoline exists to be climbed on and jumped on, with an inherent risk of falling off in its ordinary use. It exists to be interesting and attractive to children and young persons; as the Trial Judge found, "Obviously things like trampolines are attractive to young children and care is required." In other words, a trampoline has capacity to allure children. There should not be undue subtlety in order to create liability - cf. Hahn v. Conley (1971) 126 CLR 276 at 286 (Barwick CJ). In relation to the trampoline, the danger of which Mrs Urquhart's own evidence shows she had seen, so that she warned the children about it, and in relation to the respondent, a child of seven, the reasonable response was to prevent the children from going on the trampoline unless they were supervised and the means to do so by turning it over was ready to hand, and free of cost and difficulty.
19 Examples drawn from other parts of the law of negligence, relating to liability of occupiers and employers, are of little use and could well be misleading if one endeavoured to proceed directly from them to conclusions about reasonable response to foreseeable risk of injury in a domestic and parental situation. Stringent parental control and paralysis of everyday activities are not what the law of negligence requires. Many circumstances may affect what household equipment children can be allowed to use unsupervised; circumstances include the age and experience of the children and any special characteristics which a particular child may have, such as being adept in the use of the equipment, or being known to be inept; there are many possible variations in circumstances, including most importantly the age and experience of the children. It was the Trial Judge's view that Mrs Urquhart was reasonably required to take care because of the age of the children to prevent them from going to the trampoline; that is to prevent them from using it at all in situations where the children did not have adult supervision. The respondent was the elder child and was seven; Lucy, Mrs Urquhart's daughter was under five; Mrs Urquhart had no reason to think that the respondent was experienced in the use of a trampoline, and in fact she had never used one before, and knew so little about it as to think that the surface was suitable for roller skating. For an older child an explanation that she thought that would be met with disbelief and derision; for a child of seven it is an illustration of the need for access to the trampoline to be restricted to supervised occasions.
20 Counsel for the appellants contended, correctly and referring to Graham Barclay Oysters Pty Ltd v. Ryan (2002) 211 CLR 540 at 612 [192] per Gummow and Hayne JJ, that to arrive at a conclusion of negligence there must be an affirmative concept of what should have been done. The Trial Judge's concept appears clearly enough; his Honour articulated the conclusion, and attributed it to an admission by Mrs Urquhart, that "… she needed to take care because of the ages of the children in preventing them going to the trampoline." His Honour's reasons did not articulate how in his view they should have been so prevented, and his Honour's not having spelt this out should be attributed to the obviousness of the means to do so; simply turning the trampoline over is the most obvious, although other means could be thought of such as locking it away. Counsel's reference to the supposed need to keep the children locked in the house was an unfortunately extravagant piece of advocacy; the problem could be solved by much simpler means.
21 By Notice of Contention counsel for the respondent contended the decision should be confirmed on grounds other than those relied on by the Trial Judge to these effects: (1) It should have been found that Mrs Urquhart did not at any time warn or direct the children not to use a trampoline and that this failure was negligent and causative of the injury; (2) it should have been found that it was negligent of Mrs Urquhart not to have turned the trampoline on its side or alternatively upside down so as to prevent it being used (unless the children were supervised) and so as to make clear to the respondent that it was not to be used.
22 The first of these grounds is not available; as I have explained earlier, the Trial Judge's findings, although not clearly expressed, mean that Mrs Urquhart did give a warning on the previous evening. In the circumstances that warning could not be regarded as a sufficient response to the foreseeable risk of injury. The second ground does not differ greatly from the ground on which, understood as I understand the judgment, the Trial Judge acted.
23 In my opinion the decision in favour of the respondent should not be upset on appeal.
24 Counsel for the appellants challenged the Trial Judge's refusal to find that there was contributory negligence. On this subject the Trial Judge said: (Red 19-21)
The other matter that has been raised in the case, is a claim for contributory negligence. The defendant says, that it was a negligent thing for the plaintiff to get up on the trampoline wearing roller skates. There is no doubt, that as a general proposition, that is correct, but in assessing these matters the law takes into account, the age and the situation of the plaintiff.
In McHale v Watson in 115 CLR 199, it was pointed out by [McTiernan] ACJ,
"That children who are very young may be manifestly incapable of exercising any of the qualities necessary to the perception of risk. On the other hand, children who are almost adults may be regarded often as in the same position as adults."
The question really is, how this plaintiff is to be assessed between those extremes. Menzies J, at p 223 said,
"Where in an action for negligence by a plaintiff child, the defendant raises as a defence the contributory negligence of the plaintiff, it is now established that the defence may fail either because in the circumstances there is nothing upon which a finding could be made that the child was capable of taken care for its own safety or where the child is capable of taking such care, it is not established that it failed to take that degree of care for its own safety, such as that which could reasonably be expected of such a child."
It is submitted here that the plaintiff was seven years of age and therefore, know of the dangers of going on the trampoline, ought to have had a clear perception of the dangers posed by the trampoline and going on the trampoline by way of roller skates. The evidence, as I have already pointed out, is that the plaintiff had no idea herself about that and the question then becomes one of, whether or not, a seven year old child could reasonably be expected to know of the dangers of going on the trampoline.
In my view, it cannot be concluded against the plaintiff, that a seven year old child normally would or should have a perception of those dangers and on that basis, in my view, the claim for contributory negligence fails.