Additionally, he has developed a transparency thesis of photography,[36] which is summarized in the following claim: “Photographs are transparent. We see the world through them.”[37] Walton recognizes that this use of 'see' may differ from its conventional usage, but considers it parallel to the way we talk about 'seeing' through a telescope or other such tool.[38] In viewing a photograph, we thus have two related experiences: we see through the photograph to the circumstances it was originally taken, and we have a fictional experience using the photograph as a prop e.g. if one looks at a photograph of Aunt Mabel grimacing one may say “Aunt Mabel is grimacing” - it is fictional that one sees her grimacing, but in addition one actually sees through the photograph an actual grimace that she had on her face in the past.