The position of the writing on the basketball changes between shots.
Cody jumps on his bike after the gunfight between the gangs and starts it. The bike has turn blinkers. As he revs away, the blinkers have disappeared.
You can briefly see the wire lifting Miles Langford (Malcolm McDowell) up when he is being choked by the robot.
As Cody's motorbike is chased by robot teachers in a car, Mr. Bryles comments Cody failed to give proper hand signals. Cody's bike has turn blinkers.
When the axe goes into Ms. Connors' (Pam Grier) opened chest, the shot is flipped as the writing on the tanks inside her chest are backwards.