We need cooperation in such a highly specialized society. However, someone alleges that he wants to cooperate with you but at last you see that he just need your cooperation. When you need his cooperation, he has so many excuses that he is willing yet unable. I am afraid to work together with them. There are never any good things when those people have something to talk with you. At first, I thought it was so normal to supply some help for everyone need help from others. You do not know when and where you will need some help. As time goes on, you understand that indeed someone just need help from others but they cannot help others. Sometimes really good helpless, I do not know how to do. I want to refuse but I am a face saving one. OK, just as do good.