The test of Maradona's work comes this year - choosing a philosophy of play, selecting his players, establishing variations and fostering team spirit. He appears to have done all that.

But Facebook’s bare-knuckled tactics are hardly the thing for fostering community spirit. They are also the kind of practices that invariably prove counter-productive in the long run.

Taking the process of cell mitosis as example, this essay discusses the implementing of cooperative study and its significance, and also explains the way of fostering cooperative spirit.