 Generic terms (like birds in Birds fly) are expressed in English by means of bare common noun phrases (without determiner). Adverbs like normally and typically are also indicators of generic predication. As Asher and Pelletier (Asher and Pelletier 1997) have argued, the semantics for such sentences seems to involve intentionality: a generic sentence can be true even if the majority of the kind, or even all of the kind, fail to conform to the generalization. It can be true that birds fly even if, as a result of a freakish accident, all surviving birds are abnormally flightless. A promising semantic theory for the generic is to represent generic predication by means of a defeasible rule or conditional.