One hundred and ten in the Dollar Index certainly does not sound like a bubble to me. I will just have to judge the circumstances at the time. You will be able to read the newspapers and everybody will be talking about how the Dollar is going to go up forever, you will see on TV that the Dollar is the new promised land.
People will be pouring into dollars...I try to judge those things by the mood. Bubbles throughout history everywhere in the world, no matter the asset, always look and sound the same. I hope I am smart enough to recognize it.