Consideration
35 A decision is illogical or irrational "if the decision to which the decision maker came was simply not open on the evidence or if there is no logical connection between the evidence and the inferences or conclusions drawn": SZMDS at [135]. Irrationality, illogicality or unreasonableness will not be established if the decision is one upon which reasonable minds may differ: SZMDS at [131] and see also [135]. The correct approach is to ask whether it was open to the Board to engage in the process of reasoning in which it did and to make the findings of fact it did on the material before it: SZMDS at [133]; and see generally for a summary of the principles: Djokovic v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs [2022] FCAFC 3; (2022) 289 FCR 21 (Djokovic) at [32]-[35]. It is also established that a decision-maker may fall into jurisdictional error if he or she "ignored, overlooked or misunderstood relevant facts or materials or a substantial and clearly articulated argument": Plaintiff M1/2021 v Minister for Home Affairs [2022] HCA 17; (2022) 275 CLR 582 (Plaintiff M1/2021) at [27].
36 The threshold for legal unreasonableness is usually high: Minister for Home Affairs v DUA16 [2020] HCA 46; (2020) 271 CLR 550 at [26] citing Minister for Immigration and Border Protection v SZVFW [2018] HCA 30; (2018) 264 CLR 541 at [11], [52], [89] and [135]. Caution is required by the Court in assessing a complaint of unreasonableness to ensure that it does not impermissibly engage in a merits review of the decision: Minister for Immigration and Citizenship v Li [2013] HCA 18; (2013) 249 CLR 332 at [66]. As the Court in Djokovic reiterated at [17]: "[t]he Court does not consider the merits or wisdom of the decision; nor does it remake the decision. The task of the Court is to rule upon the lawfulness or legality of the decision by reference to the complaints made about it". "It is not sufficient that the court disagrees with the basis of the fact finding or associated reasoning, or even strongly or emphatically disagrees; it must be shown that the findings were not rationally open to be made": CKL21 v Minister for Home Affairs [2022] FCAFC 70; (2022) 293 FCR 634 at [65], citing, inter alia, SZMDS at [119] and [135].
37 It is timely to recall, as emphasised by the respondent, that the Board's reasons are not to be read in a manner astute to discern error: Plaintiff M1/2021 at [38], citing Minister for Immigration and Ethnic Affairs v Wu Shan Liang [1996] HCA 6; (1996) 185 CLR 259.
38 Given the material before the Board, I accept the applicant's submissions. I do not accept the respondent's submission that Ground 3 is doing no more than seeking a merits review.
39 The first impugned statement appears in the Board's reasons at [30] (recited above at [22]), that the applicant "indicated no change in his drinking habit from December 1974 to early 2000". The Board expressly stated in [30] that it was referring to the Alcohol Questionnaire dated 24 April 2012, at folio 63. However, the applicant stated at folio 62 (the preceding page of the Alcohol Questionnaire) that, "between 1996 and 1999", he "drank more often and consumed more". The answer at folio 63 is not to be considered in isolation from the remainder of the responses in the Alcohol Questionnaire, including the answer at folio 62. The answer at folio 62 is not mentioned anywhere in the Board's reasons. The statement based on folio 63 is then used by the Board to establish an inconsistency between the applicant's evidence and the evidence of Dr White as to what the applicant had said to him.
40 The question of whether there was an increased consumption of alcohol was an important one to the resolution of the claims. The respondent submitted that the Board referred (at [30]) to folios 61 to 63, and then confined the finding as to inconsistency to folio 63, which, in its submission, reflects that the Board preferred the evidence at folio 63. That submission recognises there is conflicting evidence and infers that the Board resolved that conflict in reaching its conclusion. I do not accept that that inference can be drawn from the mere reference to folio pages on which the evidence is found. The respondent's reliance on aspects of the transcript of the hearing in support of its interpretation of the Board's reasons also does not assist. Given the importance of the evidence on this topic, if the Board did resolve the conflict in the evidence, as it is suggested by the respondent, one would have expected it to have said so. Indeed, the last sentence of [30] (where the finding of inconsistency is made) does not support the respondent's submission. It finds "[t]he drinking pattern is contradicted in a report by Dr White at Folio 90(2), where he stated that Mr Walker's drinking had increased, which is inconsistent with Mr Walker's own evidence at Folio 63(1)". While it is true that the Board's reasons here again refer to folio 63, the Board does not refer to any finding it had made about the alcohol intake, instead drawing attention to the inconsistency within the applicant's own evidence in the Alcohol Questionnaire. The applicant did indicate a change in his drinking habit in the Alcohol Questionnaire at folio 62. There is no relevant inconsistency between what Dr White records and the applicant's evidence at folio 62. I note that the Board does not suggest there is any inconsistency in the applicant's evidence (between folios 62 and 63), but rather suggests the inconsistency is only with Dr White's evidence. The finding of inconsistency based on folio 63 was used to discount Dr White's opinions. If the Board had been aware of, or considered the answer in folio 62, it could not reasonably have concluded that Dr White's statement was inconsistent with the applicant's evidence. If that finding had been made by the Board knowing of the answer in folio 62, but ignoring it, the finding would be unreasonable.
41 Accepting that the failure to refer to evidence does not necessarily mean that it was not considered, in the circumstances, I accept the applicant's submission that the better inference in this case is that the Board did not consider the evidence. There is no proper basis to suggest that it was considered but not accepted. That said, whether the Board failed to consider the answer in folio 62 of the Alcohol Questionnaire or ignored it, the practical result for Ground 3 is the same. This aspect of the ground is established.
42 The significance of the impugned statement that the applicant's position is inconsistent with Dr White's report is reinforced at [33] where the Board rejects Dr White's conclusion that there was evidence of a material aggravation of his condition because of his service.
43 The second impugned statement is the Board's finding at [32] that "there [wa]s no evidence to suggest" that any psychiatric condition that the applicant may have had was "clinically significant" to meet the requirements for adjustment disorder with anxious mood. That, as the applicant submitted, was a reference to the relevant SOP, being "sufficient to warrant ongoing management". As the applicant submitted, Dr White's evidence was that it "would have been appropriate that [the applicant] be referred for specific treatment for his alcohol problems". Again, this is a matter of importance to the claims. It was not referred to in the Board's reasons (notwithstanding that, as the respondent pointed to in submission, other aspects of Dr White's report have been referred to). On Dr White's evidence, the adjustment disorder was causative of the alcohol problems, and so the need for treatment of the alcohol problems implied the need for treatment of the condition that underpinned it. There was "evidence to suggest" such a clinically significant condition; whether it was to be accepted is a different issue. The Board appears to have misunderstood Dr White's opinion. I accept the applicant's submission that this omission has resulted in a finding that is unreasonable or illogical. This aspect of the ground is established. Given the significance of the conclusion to the resolution of the claim, it is plainly a material error.
44 The respondent's submission that, if Ground 3 is established, relief should nevertheless not be granted because the Board would have reached the same conclusion due to its finding at [35], cannot be accepted, for the reasons given above. The reasons given below in relation to Ground 1 also illustrate why that is so. The respondent's submission in support tended to be rather circular in nature. It failed to recognise or grapple with the errors established and their significance to the Board's findings.