Karpik v Carnival plc (The Ruby Princess) (Evidential Ruling)

The case before the Federal Court of Australia involved a dispute between the applicant, Karpik, and the respondent, Carnival plc, in relation to the Ruby Princess cruise ship incident. The court was tasked with determining the admissibility of scientific journal articles as evidence, specifically whether these articles could be relied upon by expert witnesses and whether there were any limitations on their use. The articles were divided into two categories: those that were put to an expert witness in cross-examination and those that were not referred to in any expert evidence. The court had to decide whether these articles were admissible and, if so, whether they were subject to any limitations.

The legal issues before the court revolved around the admissibility of the scientific journal articles as evidence. The applicant sought to tender two categories of articles. The first category consisted of articles that had been put to an expert witness, Professor Catherine Bennett, in cross-examination. The second category comprised articles that had not been referred to in any of the expert evidence. The court needed to determine whether these articles could be admitted into evidence and, if they were, whether there were any restrictions on their use.

The court concluded that the articles were admissible in evidence, as experts are entitled to rely on reputable articles and publications within their area of expertise as a basis for their opinions. This principle was affirmed in previous cases, such as Bodney v Bennell and Dasreef Pty Ltd v Hawchar, and was rooted in the common law's acceptance of the reliance of professionals on reported data from fellow experts. The court noted that the articles' admissibility was not precluded by the hearsay rule or the opinion rule. While the articles in the first category had been put to an expert in cross-examination, the articles in the second category had not been referenced in any expert evidence. The court found that there was no reason to impose any limitations on the use of these articles as evidence.

The court ruled that the scientific journal articles were admissible as evidence and that there were no limitations on their use. This decision allowed the applicant to rely on these articles in support of their case, provided that they were relevant and properly authenticated. The court's ruling reinforced the principle that experts can base their opinions on reputable sources within their field of expertise, even if the underlying data is hearsay. The admissibility of the articles was thus upheld, facilitating the presentation of expert evidence in the ongoing litigation.