ing herself has responded in her own words (here) and I am personally satisfied with her explanation. I have trust that folks like Mr Fang who strive to be reasonable will eventually arrive at some form of common understanding with Ping. In general, it's very healthy to be skeptical as long as our minds are open to all data. It becomes very unhealthy only when the skeptics refuse to see data suggesting their own hypothesis could be wrong (which sadly, happens a lot even in science, but that's another discussion).