 For the later grammarian-philosopher Bhartṛhari, however, there are no divisions in speech acts and in communicated meanings. He says that only a person ignorant of the real nature of language believes the divisions of sentences into words, stems, roots, and affixes to be real. Such divisions are useful fictions and have an explanatory value in grammatical theory, but have no reality in communication. In reality, there is no sequence in the cognitions of these different components. The sentence-meaning becomes an object or content of a single instance of a flash of cognition (pratibhā).