He was known as an anarchist philosopher and an intellectual maverick. A former Roman Catholic priest, he was arguably one of the most outspoken and prescient of all the 20th century's critical theorists, and his work is increasingly influential and relevant in an age where technology has pervaded every aspect of our lives. Ivan Illich hoped for a time when the transmission model of education, or 'funnels', would be replaced by 'educational webs' - his notion of what we now recognise as social networks.