The Twilight Zone had one of the hour long episodes dealing with trying to change things. Scientist invents his time machine, goes back to 1915. The Captain of the Lusitania won’t change course. Well, he could have been a German spy trying to get the ship CLOSER to the U-Boat.When he goes to Germany with a rifle, he is interrupted before he can kill Hitler. And the guy in Hiroshima won’t listen either.Finally he decides to move to the boring Midwest, 1881. Happens to read in his history book about a fire, caused by a lantern flung from a runaway wagon…Out for a walk, he sees a salesman at his wagon, with a lantern on it. He asks him to move, salesman refuses, they fight, horse gets spooked, runs, lantern flies off (Look close, you can see the wire)So not only did he fail to change history, he caused it.