A common error in networking is to place the activities in the network according to the order in which you plan to carry them out, rather than in the order dictated by technological predecessor-successor relationships. Consider the following network.

The network was drawn this way because the planner felt that he would not start activity D until B and C were completed, and also that he would not start activity E until D was completed. If the true technological requirements on activity D are that only A must precede D, and no other activity depends on activity D, how should this network be drawn?