Key legal question
Whether the cantonal court's fact-finding and evidentiary assessment were arbitrary.
Extracted holding
The appellant did not show arbitrary fact-finding or evidence evaluation; the cantonal court had thoroughly clarified the facts and its conclusions were not untenable.
Extracted reasoning
Arbitrariness requires manifestly unreasonable treatment of evidence or clearly untenable conclusions. The court could rely on additional evidence and on expert input as party submissions; the appellant did not demonstrate that the omitted materials would have changed the outcome.