Photo — Stack
Snapshots drop one by one onto a pile, each landing with its own slight shift and tilt; the pile then thins from the top and rebuilds.
Prints accumulate at the centre like photos tossed on a table — every arrival covers most of the previous one, nudged a little aside and rocked a few degrees clockwise or counter, so the edges of earlier shots peek out around the top. The count climbs to the full set, then falls away newest-first and climbs again.
How many prints show is a triangle wave over the loop scaled to the set's length — growth and un-growth, not a shuffle. Each print's offset and angle come from noise seeded by its index, so a given photo always lands in exactly the same crooked spot, and the tilt direction simply alternates odd and even.
