Pixel traveled through time. Specifically, he traveled to 1954. Curious as to what this meant, Pixel decided to try to kill his grandfather. His grandfather was a 23 year old man then: married, but not yet a father.
Pixel went to a gun store and purchased a high-powered rifle. He purchased a crate of bullets and went to a shack in the woods for two months. During that time, he practiced his aim. He worked at his marksmanship daily. Eventually his sharpshooting improved to an astounding degree. He got to the point where he never missed his target, no matter how little time he had to prepare.
He packed up and moved to the town where his grandfather lived. He got a job as a janitor in the school his grandfather taught. Every day, he followed his grandfather from home to work, kept an eye on him there, then followed him back home. After six weeks, Pixel was confident of his grandfather’s schedule.
One cloudless Wednesday in early August, Pixel trailed his grandfather like usual. But this day, Pixel left at 3 p.m. and went to the roof of a neighboring building. He held his rifle in position and waited until his grandfather exited. Pixel took aim, made sure there was nobody nearby to interfere with the shot. His gun was loaded and he had just tested it that morning. His finger was on the trigger and there was nothing to stop his firing, so he aimed——
Ironically, he didn't see it coming.