Do not think so, when I saw this threat defense knowledge, I quickly learned, because I think the threat defense is really useful, although that is my work is not used, but I still feel that learning some good, I is such a person and as long as I see interesting knowledge, I will learn, although learning is not much, but at least when meeting, you know what, of course, the threat defense knowledge is the same, although I don’t know much, but as long as I see something about threat defense, I also know what, so in my opinion, no matter what kind of knowledge to learn more or better.