"no mechanical parts" "Like a clock" literally the most mechanical thing to ever exist.
Bro even called it an optical illusion
For anyone wondering how it actually works, there are 3 bird sculptures above it with cameras in them, they track the location of the ball on the table and relay it back to a computer, the computer then determins where the ball should roll next and sends signals to the computerized motors in the legs of the sculpture to tip the table in the desired direction. This sculpture is mechanical, electric powered, and computerized.