Questione giuridica chiave
Whether the cantonal court could rely on the SAM psychiatric expertise to deny benefits after 2011-12-31.
Decisione estratta
Yes. The expertise was complete, reasoned, and convincing; the contrary views of treating physicians did not create grounds to doubt it.
Motivazione estratta
Federal review was limited to arbitrariness and legal error. The appellant raised mainly appellate criticism and did not show concrete reasons to question the external expertise. Divergent treating-doctor opinions alone are insufficient to require new evidence.