Ian Angell was Professor of Information Systems in the Department from 1986 to 2012. Prior to that he researched and taught computer science at Royal Holloway College and University College London. Angell has very radical yet constructive views on his subject, and is very critical of what he calls "the pseudo-science of academic information systems." He has gained a certain notoriety worldwide for his aggressive polemics against the inappropriate use of artificial intelligence and so-called knowledge management, and against the hyperbole surrounding 'e-commerce'.