Factual errors: In the execution scenes, the victims of Old Sparky convulse as if in a severe seizure as the juice is rolled through them, however, in real life, this would not and does not happen. The constant flow of electricity causes all of the victim's muscles in his/her body to contract until the electricity is stopped. additionally, the kind screaming heard would be impossible because of this, as the screaming heard is the kind made with a fully opened mouth, not a neutrally positioned jaw that would come as a result of the contraction of both the jaw opening and closing muscles produced by the electricity.
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