Close Engagements with Artificial Companions: Key Social, Psychological, Ethical, and Design Issues Yorick Wilks (editor) (University of Oxford) Amsterdam: John Benjamins Publishing Company (Natural Language Processing series, edited by Ruslan Mitkov, volume 8), 2010, xxii+315 pp; hardbound, ISBN 978-90-272-4994-4, $149.00, €99.00; e-book, ISBN 978-90-272-8840-0, $149.00, €99.00