frame—they had inspected the frame for details. Then we 
     found out from the artist and an eye specialist that a 
     sophisticated audience, an audience that is accustomed 
     to the film, focuses a little way in front of the flat screen 
     so that you take in the whole frame. In this sense, again, 
     a picture is a convention. You’ve got to look at the 
     picture as a whole first, and these people did not do that, 
     not being accustomed to pictures. When presented with 
     the picture they began to inspect it, rather as the 
     scanner of a television camera, and go over it very rapidly. 
     Apparently, that is what the eye unaccustomed to 
     pictures does—scans the picture—and they hadn’t 
     scanned one picture before it moved on, in spite  of the 
     slow technique of the film.

     The key facts are at the end of the passage. Literacy