Kernrechtsfrage
Whether the appellant was entitled to a higher disability pension than a half pension from 1 January 2006.
Extrahierter Entscheid
The medical and economic findings supporting a 50% capacity in the former occupation and the resulting invalidity assessment were not shown to be wrong; no entitlement to a higher pension was established.
Extrahierte Begründung
The Federal Court was bound by the cantonal court's factual findings absent manifest error. The MEDAS report and the supplementary report were not undermined by the objections raised. The percentage comparison method is a recognized form of income comparison under social insurance law.