She said that she herself had sat on the ledge. It was not comfortable, but there was nowhere else comfortable to sit. She concluded her evidence on this point by saying that, as best she could recall, people sat on the ledge 'quite regularly, both during the day, and at functions'.
51. The third witness to give evidence on behalf of the appellant on this issue was Mr Kimberley Manns. He had been a resident at the college between 1994 and 1996. He was asked whether, on occasions, when he had been to social functions, and had repaired to the balcony area he had noticed whether people sat on the concrete ledge. He said that they had and that this was 'a regular occurrence'. He said that it happened at all sorts of times, during the day and during the evenings. He recalled having been told by the Master, on one occasion, to keep the noise down. He was asked whether at that time anyone was sitting on the ledge. He replied 'that there would have been, yes'. He could not recall the Master telling any of them to get off the ledge.
52. Under cross-examination, Mr Manns resiled somewhat from his evidence-in-chief regarding the Master's complaint. He said that when Father Waite came out of his study, and told the students to keep the noise down, he could not recall whether anyone had been sitting on the ledge on that occasion. He could recall that they were 'leaning against the ledge'.
53. The next witness called on behalf of the appellant in relation to this issue was Ms Alison Jane Ryan. She gave evidence that prior to the occasion when the appellant sustained her injuries she had attended social functions, and gone out onto the balcony area. She was asked whether she had seen people sitting on the ledge. She replied 'Yes, certainly along the balcony, people would lean against that and sit there'. She said this was a 'regular occurrence'. She also said that it was common for people to sit on the tables, put their legs on the place where students normally sat so they would be facing out and then other students would congregate along the ledge, and converse with these people. She reiterated that it was common that people would sit on the ledge.
54. The final witness called on behalf of the appellant regarding this issue was Ms Claudia Anne Kearne. She had been a student at the college in 1995 and 1996. She said that it was a 'common occurrence' for people to be sitting on the ledge in the balcony area. Those people had their feet off the ground when this took place. It occurred both during the day and on social occasions.
55. The respondent's witnesses included the Deputy Master of the College between 1981 and 1983 and Father Colin Fowler. There were also two independent witnesses called on behalf of the respondent on this issue. Ms Danielle Smith, who was President of the Residents Association at the time the appellant was injured, and who attended the dinner, said she could not remember anyone having sat on the ledge. She conceded, however, that she had seen students leaning against it.
56. Mr David Issacs said that he had seen students sitting on the ledge, but only along a stretch of the balustrade that was directly above the roof of a ground floor structure. That meant that anyone falling from the ledge would be exposed to only a minimal drop.
57. Father Colin Fowler was the main witness called on behalf of the respondent. He had been in residence at the college from April 1996, and became Master in September of that year. During that period, he was the Deputy Master, but his main duties were as Acting Chaplain on the campus. His office in College was on the ground floor but his residence was on the fist floor.
58. Father Fowler said that during the period between April 1996 and 24 October 1996 he moved around the area of the College generally every day, and would cross the balcony area to get to the dining room several times each day. He saw students in the vicinity of the ledge on many occasions but never saw them sitting on top of the balustrade. He acknowledged, however, that he had noticed students leaning up against the balustrade from time to time, though always with their feet on the ground.
59. There was a direct conflict of evidence between Father Fowler and one of the students called for the appellant. That conflict was resolved in favour of Father Fowler. Apart from that, the Master found that all witnesses were endeavouring to tell the truth.
60. Counsel for the appellant made the point that the respondent only called evidence from staff of the College as to the period between 1981 and 1983, and the period from April 1996 onwards. He submitted that the period in between was of considerable significance, particularly as planning and giving effect to the relocation and reconstruction of the Tavern Bar took place during that period. Further, evidence as to the period from April 1996 was called from only one staff member with limited experience at the College. He submitted that a Jones v Dunkel [1959] HCA 8; (1959) 101 CLR 298 inference ought to have been drawn in favour of the appellant in relation to the respondent's failure to call other evidence of what was known to College authorities regarding the use by students of the balustrade as a seat near where the accident had occurred.
61. Counsel for the respondent relied upon the fact that no evidence was called on behalf of the appellant regarding this supposed use of the balustrade as a seat prior to 1994. It was in that period that planning for and execution of the relocation and reconstruction of the Tavern Bar had taken place. The only evidence led regarding that issue had been from students, including the appellant, who attended the College at the time of the accident. No students who attended the College between 1989 and 1993 gave evidence of any such practice. He submitted that the respondent bore no onus of proof on this point, and was only called upon to answer that which was led against it. He further submitted that the express finding by the Master covered the period from April 1996. Even if a Jones v Dunkel inference were to be drawn, it could not 'supply' evidence. Accordingly, no inference of knowledge on the part of the College authorities could be drawn.
62. Counsel for the appellant responded by submitting that the evidence from the appellant's witnesses who spoke of the practice of sitting on the ledge or balustrade, which was implicitly accepted by the Master, certainly pre-dated April 1996 by a significant period. Further, it could be presumed that a practice of that nature would not have suddenly sprung up, but would reflect student conduct in previous times. He submitted that the practice must have been part of the culture of the College. He also submitted that there was unchallenged evidence that the use of the balcony area in the immediate vicinity of the accident as a congregating point for students, both during the day, and at functions in the junior common room, was well established and known to the College authorities. He pointed out that a student called by the respondent gave evidence that he had seen students using the balustrade as a ledge to sit on, albeit in an area where there was no substantial fall on the other side. He submitted that the only proper inference was that the responsible authorities had knowledge of the practice or, alternatively, that they should have been aware of it.
63. In our opinion, the evidence led by the appellant (that the balustrade had been used as a seat by some students since at least 1994), if left unanswered, was sufficient to found an inference that this practice had existed previously. The evidence was left unanswered. There was no explanation from the respondent as to why it called no evidence regarding lack of knowledge of this practice relating to the critical period, namely that between 1989 and 1993. Accordingly, the appellant was entitled to the benefit of the inference that such evidence was not led because it would not have assisted the respondent on this issue. That circumstance should also have been brought to account in assessing the evidence of Father Fowler, who had been the Deputy Master, and then Master of the College. He was in no position to give evidence regarding the knowledge of the College authorities prior to April 1996. No other responsible supervisor was called to deny knowledge of the practice. If the appellant was entitled to a finding of knowledge pre-April 1996, it is difficult to see how that situation could be displaced thereafter without calling witnesses other than the newly arrived Deputy Master. Moreover, there was no explanation for the failure to call any witnesses, other than Father Fowler, regarding the period between April and October 1996.
64. As stated above, an important issue that the Master had to determine was whether the College authorities had actual knowledge of the practice of students using the balustrade as a seat. It must be emphasised that the Master accepted that this practice existed, and was not therefore engaged in conjecture about knowledge on the part of those authorities of a hypothetical practice. In our opinion, the Master was required when resolving this issue to have regard to the respondent's failure to lead evidence relating to the knowledge of those responsible for student supervision at the College prior to April 1996. He was also required to have regard to that same failure to lead evidence regarding the knowledge of those staff members (other than Father Fowler) between April 1996 and the accident.
65. Proof of knowledge on the part of the College authorities could only be based on direct evidence, or inference. There was no direct evidence. Nonetheless, the appellant was entitled to rely upon the ordinary principles of circumstantial evidence as an alternative method by which to demonstrate such knowledge. The more frequent the practice of sitting on the ledge might be, the more likely it would be that some person employed by the College in a management role would have observed what was happening.
66. In the ordinary course, it would be expected that the existence of such a practice would have come to the attention of at least some of those responsible for student supervision over the many years that had passed since Tavern Bar first came into existence. Here, there was no secret about the fact that students were using the ledge to sit on. It was hardly surprising that they would do so. Young persons, particularly those who have had too much to drink, are notoriously prone to foolish behaviour. Father Fowler had seen students leaning against the ledge. It is but a short step from leaning against a structure of that kind to sitting upon it.
67. If the only evidence in this case had been that students regularly used the ledge as a seating area, it would be open to infer that someone associated with the management of the college must have seen that happening at some stage throughout the many years that it had been occurring. However, merely because an inference is capable of being drawn, does not mean that the inference should be drawn. Had the College called a number of members of the staff to say that they had never seen any students sitting on the ledge, and had their evidence been accepted as truthful, the Master would have been entitled to regard the inference for which the appellant contended as one that had been rebutted.
68. The position is different, in our view, when the respondent, with full knowledge of the strength of the evidence regarding the practice of students sitting on the ledge, elected to call only Father Fowler, in addition to Ms Smith and Mr Issacs to rebut the inference that would logically be drawn from the existence of the basic fact. When students regularly sit on a ledge, it may be presumed, in the absence of any evidence to the contrary, that this fact is known to at least some members of the College staff. When the only member of the College staff who is called to give evidence is a person who was only at the College for a few months prior to the unfortunate incident giving rise to the appellant's injuries, and no explanation is provided by the respondent as to why none of the other members of the staff were called to give similar evidence, the rule in Jones v Dunkel can, and in our view should, be applied.
69. It is unnecessary, in this appeal, to set out in detail the authorities which govern the operation of that rule. It is sufficient to note simply the following propositions: