 As helpful as the Sufficiency thesis could be for foundationalists, it faces much criticism. Many objections proceed by proposing requirements for justification that are not always satisfied when one has an experience with a given content. For example, one might demand that the experience be a case of seeing  (section 2.2 of this entry),  or demand that the experience be suitably free of top-down influence from one’s own mind  (section 2.4 of this entry).  (For further objections, see McGrath 2017 or Chudnoff 2018).