Generally, Standard English today does not depend on accent but rather on shared educational experience, mainly of the printed language. Present-day English is an immensely varied language, having absorbed material from many other tongues. It is spoken by more than 300 million native speakers, and between 400 and 800 million foreign users. It is the official language of air transport and shipping; the leading language of science, technology, computers, and commerce; and a major medium of education, publishing, and international negotiation. For this reason, scholars frequently refer to its latest phase as World English.