I have felt for a long time without a computer, I said to my friend, I think my computer above threat defense seems not very good, my friend said you for a long time without a computer, then your computer above threat defense will be expired or something, I remember when I was in college, we who think computer is a good thing, but now we all did not want to, because we all feel like is not what great things, my computer inside the threat defense actually I think it was good that kind of feeling, I must take to deal with those things now, or if when I use them is not enough trouble.