The 7 Silliest Time Travel Concepts in Science Fiction

Time travel has been a standard of science fiction since H.G. Wells' "The Time Machine" came out in 1895, but fictional people have been hopping through time and space for hundreds of years, from the Hindu sacred text the "Mahabharata" to the 12th-century medieval text De nugis curialium.
But just because people have been thinking about time travel for centuries now doesn't mean all of their accounts make sense. Here are the seven of the worst time travel concepts to be found in modern fiction. These explanations for time travel, given what scientists currently know, are total nonsense.
So science fiction that doesn't even try to explain its time travel, such as "A Connecticut Yankee in King Arthur's Court," or that brushes past explanation with non-answers like the infamous "wibbly wobbly timey-wimey" line in "Doctor Who" don't count.