Examines Jean Piaget's theories on the laws of formal logic, and Johnson's claim that the law of noncontradiction is only descriptive of macroscopic objectives. Suggests Piaget and Johnson are wrong, since the possibility of saying anything significant and informative presupposes the law of noncontradiction is followed. (Author)

How children acquire language is a riddle for developmental linguists and the subject of debate among them. Some linguists argue that children acquire language through a universal process regardless of their native tongues. Evidence of the innateness of language capacity has also appeared in studies of deaf children. (Author/JN)