Naive realism and the problem of illusion

As standardly conceived, an illusion is a case in which appearances in at least one respect conflict with reality. Such a conflict only obtains in cases where a non-F object appears to be F-appears F in a 'committal' way, as I put it. It is, however, possible for an object to appear F in a non-committal way-i.e. without appearing to be F. The paper discusses a number of recent naive realist attempts to account for illusion. Drawing on the distinction between committal and non-committal appearances, I argue that none of the proposals is able to account for illusion as standardly conceived.