Question juridique clé
Whether the cantonal court arbitrarily assessed the evidence regarding A.'s contractual status as joint debtor or surety.
Solution extraite
The evidence did not compel the conclusion that the parties intended a suretyship; the finding that A. bound himself as joint debtor was not arbitrary.
Motifs extraits
The witness statements and A.'s own declarations did not clearly show a different common intent; the challenged inferences from the documents and testimony were sustainable.