Smith's case was a case concerning the accident between the HMAS Melbourne and HMAS Voyager on 16 February 1964. Santow JA observed, relevant to his earlier comment about the means of knowledge, that in that case there was a question about whether the plaintiff had the capacity to have recourse to the means of knowledge unimpaired by an adverse mental condition. There was also in that case evidence that the plaintiff had been instructed not to talk about the matter by his superiors. There was also evidence that the plaintiff for some time lacked sufficient insight to utilise the means of knowledge at his disposal. In that context I observe that, in my opinion, there is no evidence that Mrs Mills suffered any relevant inhibitions to her means of knowledge about the role of the cleaners and the operators of the mall so far as her accident was concerned.
39. Returning to Smith's case, Santow JA went on to observe at [103]:
" The capacity to take action to utilise a means of knowledge, while based on what is reasonable in the circumstances, must be judged by reference to the actual qualities of the person concerned, rather than by reference to the qualities of the hypothetical reasonable man. "
His Honour referred to other authority for the proposition: