I worked in the NHS as a hospital orderly during my national service, and people thought it was a noble service. But over the years it's lost its humanity.

Time is the great mystery anyway. And it's still the great mystery in the moving picture as well.

About shadows: do we see shadows? Loads of people don't. A camera will notice a shadow, but how many people have got a shadow in front of them when they take a picture and don't notice it, and then they see it in the photograph because the photograph will catch the shadow.

The editing of moving pictures is geared toward the single image. You'd have to edit things in new ways.

I think the ambiguity of similarity and difference is very powerful. It's the same scene in different times of year read across the grid, and, of course, different locations reading vertically. But you can get confused and lost in the series. You force the mind, which is always comparing and contrasting, to stumble ... That ambiguity is very powerful. One is getting lost and refinding oneself.

But, I would always be thinking of how pictures are constructed and colour, how to use it, I mean you're using it for constructing, makes you think about it, the place did as well.

The camera can't see space. It sees surfaces. People see space, which is much more interesting.