Dreyfus model and Skill tree

https://kb.cnblogs.com/page/593985/

https://acejoy.com/2018/03/14/%E5%BE%B7%E9%9B%B7%E7%A6%8F%E6%96%AF%E6%A8%A1%E5%9E%8B%EF%BC%88dreyfus-model-of-skill-acquisition%EF%BC%89/

待续