If the above comments made by the learned trial judge in the course of the trial had stood alone, we would have been of the view that the appellant, having taken no clearly stated objection to them at the time and having stood by until the contents of his Honour's judgment were known, could not now found upon them in order to have that judgment set aside on the grounds of a reasonable apprehension of bias. The statements which the learned trial judge had made about his preconceived views of Dr. Lawson were, however, effectively revived by what his Honour said in his reserved judgment. The appellant's failure to object to the comments made in the course of the trial cannot, in our view, properly be seen as a waiver of any right to complain if comments made about Dr. Lawson in the judgment itself would, in the context of those earlier comments, have the effect of conveying an appearance of impermissible bias in the actual decision to a reasonable and intelligent lay observer. While, as we have indicated, the line between comments which would be likely to have that effect and comments which would not is necessarily an imprecise one, we have come to the conclusion that, when they are read in the context of what was said in the course of the trial, his Honour's comments in his judgment fall on the wrong side of that line. In particular, it seems to us that such a lay observer would be likely to see the derogatory and wide-sweeping references to Dr. Lawson in the judgment - "Even Dr. Lawson"; "his evidence, which was as negative as it always seems to be - and based as usual upon his non-acceptance of the genuineness of any plaintiff's complaints of pain" (emphasis added) - as indicating that his Honour was concerned to vindicate his preconceived and very strong adverse views about the reliability of Dr. Lawson as a witness and had allowed those views to prejudice his whole approach to the case to the detriment of the defendant. An experienced lawyer would appreciate the ability of a trial judge to ensure that preconceived views do not cause the actual decision to be tainted by prejudgment or bias. The likelihood that the lay observer would not lies at the heart of the requirement of the appearance as well as the reality of impartial justice. To borrow and adapt words used by Mahoney J.A. in his dissenting judgment in the Court of Appeal, the comments in the judgment were such as to cause "reasonable apprehension" on the part of a lay observer that the judgment itself was, "in the end", affected by bias.