Question juridique clé
Whether the cantonal court acted arbitrarily in finding the witness statements about drug delivery to A________ too uncertain to support conviction.
Solution extraite
No. The cantonal court could reasonably doubt the witness's credibility because his statements were late, vague, and lacked concrete details; the federal court would not replace that assessment.
Motifs extraits
Review of facts is limited to manifest inaccuracy. Here the witness's account remained imprecise on dates, quantities, and circumstances, and the additional file material did not make the doubt insoutenable.