 The following accounts of self-knowledge all take advantage of one or more of these facts about self-ascription. Because these ways of obtaining self-knowledge all violate the detection condition on introspection (condition 5 in Section 1.1 above), and because philosophers are divided about whether methods of obtaining self-knowledge that violate that condition count as introspective methods strictly speaking, philosophers are divided about whether accounts of self-knowledge of the sort described in this section should be regarded as accounts of introspection.