Questione giuridica chiave
Whether the defendant could rely on deception under Art. 28 OR to reclaim the CHF 15,000 advance.
Decisione estratta
No deception was established: the alleged concealment depended on facts not validly proved, and the new factual allegations were excluded as an inadmissible novum.
Motivazione estratta
A concealment amounts to deception only if there is a duty to disclose, which presupposes knowledge or required knowledge of the relevant facts. The cantonal court was not bound to hear the late new allegation, and the evidence complaint failed because no specific, legally relevant fact to be proved by expert evidence had been properly identified.