■Defeated opposition parties must find clever methods for survival：
One bird decided to move to a new tree after catching five bugs. But if the tree it flew to had no bugs, the bird would have to stay there forever.
Another bird decided to look for bugs in one tree for five minutes and then move to the next. Even if the tree happened to have many bugs in it, the bird would have to leave them and move on after five minutes. Moreover, the next tree may have no bugs at all.
