Kernrechtsfrage
Whether the cantonal court violated the claimant's right to be heard by not submitting the RAD medical opinion of 23 January 2008 before judgment.
Extrahierter Entscheid
Yes. The RAD opinion was a new medical statement relevant to the assessment of capacity, and the claimant had to be given an opportunity to comment before the cantonal decision.
Extrahierte Begründung
A party must be able to address new evidence before the deciding court. The late submission could not be treated as a mere procedural exchange, and the defect was not cured in federal proceedings because the Supreme Court had limited review.