In Rosianu v. Western Logistics Inc. (Fed CA, 2021) the Federal Court of Appeal commented on the nature of admissible affidavit evidence, here in a judicial review:
[29] Moreover, as explained by the Federal Court, there are general principles applicable to affidavit evidence (specifically, in this context, Rule 81(1) of the Federal Courts Rules, SOR/98-106), for example, it cannot consist of arguments, opinions, or hearsay. Finally, the evidence must be relevant to an issue properly before the Court. ...
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