So we don't need to add, in this ad hoc fashion, the no branching rule. 这样我们也就不用加入无分支规则了。
It may seem silly now, but it illustrates a very powerful point: A good user interface enables users to move in an ad hoc, piecemeal fashion from beginner to expert. 但它阐明了一个非常强大的观念,即一个好的用户界面可以使其用户以特别的方式逐步从新手用户晋升为专家用户。