Students watch a projection screen.
A screen shows 9 separate YouTube videos of U S Presidents speaking simultaneously.
A video of a live concert is pulled up and placed in front of all the other videos.
Standing next to the screen, the projectionist stuffs a piece of rag into the neck of an empty glass bottle.
He winds string around the the bottle, starting at the base and working his way up.
He stops winding, sets the spool of string next to the bottle and returns to the computer.
He touches the bottle.