New users are happy with world vectors, but as they progress to become perpetual intermediates they begin to develop their working sets, and the (pedagogic) world vectors will start to seem tedious.

• 新用户会为世界途径高兴，但是随着使用者逐渐成为永久的中间用户，他们开始发展自己的工作集，（学习式的）世界途径也开始变得单调乏味。