What is the test for an expert's opinion that in law a conclusion based on an opinion not reasonably supported by facts is patently unreasonable?

Can expert opinions based on assumed facts be admissible at trial? (British Columbia, Canada)

Does the fact that an expense relates to an extracurricular activity bring the amount of child support under s. 7 of the Child Support Guidelines (e.g. expenses) into s.7 of the child support table? (British Columbia, Canada)

Does the Court of Appeal in Dunsmuir hold that a patent unreasonableness standard set forth in s. 59(3) and (4) of the Anti-Patent Unreasonableness Act? (British Columbia, Canada)

Is there any case law in the history of the Court of Appeal to support the argument that reason is insufficient to support a claim of reason? (British Columbia, Canada)

What is the difference between an unreasonable decision and a patently unreasonable decision? (British Columbia, Canada)

Does a strong medical opinion support that a recommended treatment is both reasonable and necessary? (British Columbia, Canada)

Does the fact that the coffee machine needed to be primed support the conclusion that it was not in proper working order? (British Columbia, Canada)

Is an expert’s opinion based on hearsay? (British Columbia, Canada)

Is patent unreasonableness the standard of review for findings of fact or law or exercise of discretion under the Administrative Tribunals Act? (British Columbia, Canada)

Is there any case law that supports the argument that a radiologist will inevitably conclude that a fracture is present, based on the x-ray, and that the radiologist’s opinion is that the fracture should not have been diagnosed? (British Columbia, Canada)