Grewal v Khakh 2018 BCSC 2055 discuss the cast for what constitutes an expert witness and followed the decision of the BC Court of Appeal in Regina v Kinnie (1989) 40 BCLR (2d) 369 as follows:
“from this it is clear that so long as a witness satisfies the court that he is skilled, the way in which he acquired his skill is immaterial. The test of expertness, so far as the law of evidence is concerned, is skill, and skill alone, in the field in which it is sought to have the witnesses opinion. If the court is satisfied of the witnesses sufficiently skilled in this respect for his opinion to be received, in his opinion is admissible.”