Penjelasan yang lebih jelas berkenaan dengan frasa luar biasa meyakinkan dalam konteks di Singapura dinyatakan dalam kes Public Prosecutor v Mohammed Liton Mohammed Syeed Mallik [2008] 5 SLR 601. Mahkamah Rayuan di Singapura menyatakan seperti yang berikut: “[37] The rule as to corroboration in so far as sexual offences are concerned was laid down in the local context in the Singapore High Court decision of Khoo Kwoon Hain v PP [1995] 2 SLR 767 (“Khoo Kwoon Hain”), where Yong Pung How CJ held that while there was no rule of law in this country that in sexual offences, the evidence of the complainant must be corroborated, it was nonetheless unsafe to convict in cases of this kind unless the evidence of the complainant was “unusually convincing” (Khoo Kwoon Hain at 777, [50]; see also Tang Kin Seng v PP [1997] 1 SLR 46 (“Tang Kin Seng ”) at [43] (where the phrase “unusually compelling” was used); Soh Yang Tick v PP [1998] 2 SLR 42 (“Soh Yang Tick”) at [33]; Kwan Peng Hong v PP [2000] 4 SLR 96 (“Kwan Peng Hong”) at [33] (where the phrase “unusually compelling or convincing” was used); and Chng Yew Chin v PP [2006] 4 SLR 124 (“Chng Yew Chin”) at [33]). Further, in Tang Kin Seng, Yong CJ clarified (at [43]) that this did not amount to a legal requirement for a judge to warn himself expressly of the danger of convicting on the uncorroborated evidence of a complainant in a case involving a sexual offence (see also Kwan Peng Hong at [33]). [38] As to what “unusually convincing” means, Yong CJ, in Teo Keng Pong v PP [1996] 3 SLR 329, clarified ( at 340 [73]) that this simply meant that the witness’s testimony must be “so convincing that the prosecution’s case was proven beyond reasonable doubt, solely on the basis of the evidence” (see also Lee Kwang Peng v PP [1997] 3 SLR 278 (“Lee Kwang Peng”) at [69]–[70] and Kwan Peng Hong ([37]; supra) at [33]). Rajah J in Chng Yew Chin ([ 37] supra) also adopted this meaning, holding thus (at [ 33]): In this context, dicta in case law abound cautioning judges to scrutinise the evidence before them with a fine-tooth comb, given both the ease with which allegations of sexual assault may be fabricated and the concomitant difficulty of rebutting such allegations: Ng Kwee Piow v Regina [1960] MLJ 278. Therefore, it is necessary that the testimony of such complainants be “unusually convincing”, which is to say, it must be sufficient to establish guilt beyond reasonable doubt: Teo Keng Pong v PP [1996] 3 SLR 329 at 340, [73]. [emphasis added] [39] Given that the standard of proof required in a criminal case is already that of “beyond a reasonable doubt” (see [34]–[35] above), the expression “unusually compelling” must mean something more than a mere restatement of the requisite standard of proof. Indeed, Prof Michael Hor notes, in “Corroboration: Rules and Discretion in the Search for Truth” [2000] SJLS 509 at 531, that the expression must clearly mean something apart from the standard of proof. If, in fact, one scrutinises closely the observations of Rajah J in Chng Yew Chin ([37]; supra) quoted in the preceding paragraph, it will be seen that the true emphasis is not on the standard of proof in the abstract, but, rather, on the sufficiency of the complainant’s testimony. By its very nature, the inquiry is a factual one. It is also a question of judgment on the part of the trial judge that is inextricably linked to the high standard of proof, ie, “beyond a reasonable doubt”. In our view, therefore, the “extra something” implied by the word “unusually” must refer to the need for the trial judge to be aware of the dangers of convicting solely on the complainant’s testimony as well as of the importance of convicting only on testimony that, when weighed against the overall backdrop of the available facts and circumstances, contains that ring of truth which leaves the court satisfied that no reasonable doubt exists in favour of the accused. Since a mandatory warning from the judge to himself is not required, the implication is that the appellate courts will scrutinise the trial judge’s grounds of decision to see whether the trial judge was indeed aware of the danger of convicting on the bare word of the complainant as well as whether the quality of the testimony itself was consistent with the high standard of proof beyond a reasonable doubt. [40] In the present case, a definitive ruling on the meaning of the expression “unusually compelling” is not strictly necessary since the trial judge implicitly found that corroboration was required. In Mohammed Liton (No 1) ([4]; supra), the trial judge held (at [36]) that: However, from the testimonies, and given the small measure of corroboration in the cautioned statements of the accused, I am satisfied that, in so far as the sexual offences were concerned, the Prosecution has proved that the accused had raped the complainant and also sodomised her. [emphasis added] In our view, this was an implicit finding by the trial judge that corroboration was necessary, presumably because the complainant’s evidence was not “unusually compelling”. In this respect, the Singapore High Court has held that an appellate court will not readily overturn a trial court’s finding that corroboration was not required: see Chen Jian Wei v PP [2002] 2 SLR 255 at [34], where Yong CJ observed that a trial judge who had had the benefit of observing the demeanour and conduct of a child witness would be in a far better position than an appellate court to decide if corroboration was required in the circumstances of the case (although he decided, based on the actual facts of that particular case, that the trial judge erred in not requiring corroboration of the child witness’s testimony). The same considerations must apply when the trial judge has found that corroboration was required. Accordingly, we were of the view that, in this case, corroboration was required in respect of the complainant’s evidence before conviction of the respondent in respect of the acquitted charges could be secured. Indeed, both the appellant and the respondent proceeded in their submissions on the basis that corroboration was required.”