Harley Hahn的《Unix Unbound》一书中有介绍vi和emacs的章节。其中介绍vi的一章中提到：

HINT: If you are learning vi and you become temporarily
discouraged, take a break and try a little emacs. emacs
will seem so complex and impossible that you will feel a
lot better about using vi.
介绍emacs的一章中提到：
HINT: If you are learning emacs and you become temporarily
discouraged, take a break and try a little vi. vi
will seem so complex and impossible that you will feel a
lot better about using emacs.

我：囧。。。。。。。。。