as a general rule we choose to see a photograph either as a mechanical transcription of a field of light with randomly disposed objects, or as an intentional reordering of that field into a deliberate meaning. We can look at the picture as the world, or the maker's mind or imagination playing upon the world.We desire and need more information than the image alone. Uncaptioned, a photograph can seem a mote floating in space, unmoored, unattached. Or a cryptic hieroglyph. Hieroglyphs hide the codes, the secret knowledge they require for decipherment.
He adds that for all their apparent transparency and ease of identification, photographs often seem hieroglyphic, obscure, ambiguous, elusive, the more so the more transparently window-like they seem.