| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | time travel | Science fiction enthusiasts | Time travel is a popular theme in science fiction, where characters manipulate the fabric of time to explore past, present, or future events. | 1 |
| 2 | time travel | science fiction enthusiasts | Time travel opens up the possibility of altering historical events and creating alternate timelines. | 1 |