Questione giuridica chiave
Whether the cantonal court violated the right to evidence by refusing further witnesses and a new expert report
Decisione estratta
No. The refusal was based on anticipatory assessment of the evidence, not on an incorrect allocation of the burden of proof.
Motivazione estratta
The cantonal court had already formed its conviction from the evidence on file; challenging that assessment is not a federal-law issue under Art. 8 CC.