Tyrone was having trouble in school; his teacher was always yelling at him, “You’re driving me crazy, Tyrone; can’t you learn anything?”

One day Tyrone’s mother came to school to see how he was doing. The teacher told her honestly that her son was simply a disaster, getting very low marks, and that she had never had such an unmotivated and ignorant boy in her entire teaching career. Tyrone’s mom, shocked at the feedback, withdrew her son from school and moved out of Detroit, relocating to Cleveland.

25 years later, the teacher was diagnosed with irreversible cardiac disease. Her doctors all strongly advised her to have open heart surgery, which only one surgeon at the Cleveland Clinic could perform. Left with no other options, the teacher decided to have the operation, which was remarkably successful. When she opened her eyes after the surgery, she saw the handsome young doctor who headed her surgical team smiling down at her. She wanted to thank him, but could not talk. Her face started to turn blue, she raised her hand, trying to tell him something, but quickly died.

The doctor was shocked, wondering what went wrong so suddenly. When the doctor turned around to leave the room, he saw Tyrone, now a janitor at the Clinic, had unplugged the life-support equipment in order to plug in his vacuum cleaner ....

Math proves that predicting a mass shooter / shooting is practically impossible: