Kernrechtsfrage
Whether the claimant was entitled to a full disability pension instead of a half pension.
Extrahierter Entscheid
The cantonal court correctly found that the claimant retained 50% work capacity in light-light back-strain jobs and that the 55% invalidity rate justified only a half pension.
Extrahierte Begründung
The Federal Supreme Court found no legally relevant error in the cantonal court's assessment of the medical evidence or the income comparison. The attack on the expert report was merely appellatory, and no further evidence was required.