A person needs at intervals to separate himself from family and companions and go to new places. He must go without his familiars in order to be open to influences, to change.
It's all well and good to say that Germans were all responsible for the concentration camps, but I don't think they were. I think that was the work of a small group of fiends.
Complexity that works is built up out of modules that work perfectly, layered one over the other.