New SNB chairman Hildebrand also says that if interest rates were kept too low long-term, it would cause problems for the economy.
Sounds like he is setting the stage for taking away the punchbowl. He is in the difficult situation of trying to keep the franc from strengthening too much while at the same time trying to set the stage for eventual removal of QE and rate hikes.
Earlier today, Hildebrand had comments on the franc.