Mark Twain's "A Connecticut Yankee in King Arthur's Court" (1889), in which the protagonist finds himself in the time of King Arthur after a fight in which he is hit with a sledgehammer, was another early time travel story which helped bring the concept to a wide audience, and was also one of the first stories to show history being changed by a time traveler's actions.
Mehanizem je mejna fantazija, v tem primeru ura, če je bila navita, je začela teči nazaj in prenašala ljudi v bližini nazaj v času, brez pojasnila od kod ura je in kako je pridobila to sposobnost.