 It is a key challenge to contextualists to provide a full and well-motivated account of the source and nature of the shift in context involved in the Liar, though of course, many contextualists believe they have met this challenge. In favor of the contextualist approach is that it takes the revenge phenomenon to be the basic problem, and so is largely immune to the kinds of revenge issues that affect other approaches we have considered. But, it may be that there is another form of revenge which might be applied. To retain consistency, contextualists must apply restrictions on quantifiers to such quantifiers as ‘all contexts’. To achieve this, it must presumably be denied that there are any absolutely unrestricted quantifiers. Glanzberg (2004b, 2006) argues this is the correct conclusion, but it is highly controversial. For a survey of thinking about this, see the papers in Rayo and Uzquiano 2006.