Trace and conceptual blending – Marey’s photographs are blended films
link to the buddhist monk ascending descending hill problem as solved by conceptual blending – film 1 goes up hill, film2 goes down hill. Superpose films.
link between negative, casting and trace.
Rachael Whiteread – cast of a space or mould for a wall? positive or negative? traces on the wall
a bit like a daguerreotype – could be negative or positive depending on the angle or perspective from which it is viewed.
A negative may not be spectral (ref Vera Lutter). A spectre is in-between positive and negative.