Questione giuridica chiave
Whether the refusal to hear proposed witnesses violated the right to be heard or amounted to arbitrariness
Decisione estratta
The refusal was not arbitrary; the court had valid grounds for anticipatory assessment of evidence and the complaint was also procedurally deficient.
Motivazione estratta
The lower court could reject evidence that was not likely to change the result. The appellants did not specifically show how the witnesses could prove the alleged agreement, and the asserted hearing violation was not exhausted by the available cantonal remedy.