Key legal question
Whether the cantonal court's assessment of the victim's path and the collision was arbitrary.
Extracted holding
No. The Federal Court held that the lower courts could prefer the more plausible reconstruction and that the appellant did not show an insustainable assessment in result.
Extracted reasoning
There was no direct material proof of the exact path, but the courts could draw inferences from the location of the hammer, the site layout, and witness evidence. The appellant merely advanced another possible version, not one that made the chosen version arbitrary.