The meanings of the words grammar and linguistics have undergone a multitude of changes in the last years, but teachers should continue to teach linguistics and formal grammar in the schools. (JH)

The meaning of a word often cannot be formulated by conscious rules, because it is unconscious. Evidence on the verb "break" demonstrates this. The consequence for teaching is that teachers cannot supply meanings in words, but should present a wide range of uses of a word, so that students can intuit the unconscious generalization. (Author)