Everything that happens next during the procedure must be related to this story—an injection becomes the bite of an insect; the heat on the skin becomes the sensation of the sun and a machine that rings becomes a police car passing nearby.

But another machine in the plant, which USES a laser to scan the passing material, can sort plastic by type and colour with great accuracy.

This machine has two killer apps: autograding of homework for the teachers; passing notes via wireless for the kids.