The pictures within these galleries fall into two broad catagories.
Digital pictures, which were created using various computer
programs, and Analog pictures, which were created using
video feedback. In most cases however, the "digital" pictures are
really only quantizations of fundamentally continuous mathematical
structures, and so may be viewed as "analog". Similarly,
during the creation of the "analog" images, they were constantly being
scanned into discrete chunks, mixed, and reassembled, so there is a
"digital" aspect to these images as well. All this is as it should be.