"The fair-minded observer is a hypothetical figure. While the question is not settled by any decision of the Court, it appears to me that the knowledge to be attributed to him or her is a broad knowledge of the material objective facts as ascertained by the appellate court, as distinct from a detailed knowledge of the law or knowledge of the character or ability of the members of the relevant court. The material objective facts include, of course, any published statement, whether prior, contemporaneous or subsequent, of the person concerned. If, in the particular case, the proper conclusion is that a fair-minded lay observer with a broad knowledge of those facts would not entertain a reasonable apprehension of bias, that is the end of the issue of disqualification by reason of an appearance of bias. Strictly speaking, it is unnecessary for the purposes of the present case, where no allegation of actual bias has been made, to decide whether an appellate court should entertain such an allegation. I would, however, indicate that I consider that the reasonable apprehension test is of such broad and general application that it is unnecessary and inappropriate for an allegation of actual bias to be raised before or determined by an appellate court." [Footnotes omitted.]