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The holographic tutor was aware of slackers.
A holographic tutor allowed the user to implement education via a computer system and holographic display that would come in the form of an instructor. Marty McFly used one in 1991 as he studied for a test on the American Civil War.
When the tutor gave the date to the Battle of Chattanooga, the new DeLorean time machine's time circuits were activated by its voice and the date was set in the car.
Behind the scenes[]
It is unclear whether this piece of technology was invented by Emmett Brown or an artifact from the future.