Assertion: time travel | /r/HasProperty | possible
Facets:
value: physically
type: MANNER
value: logically
type: DEGREE
Source sentences:
text: Stories regarding travel into the past and the future have long captured our imagination, but the question of whether time travel is possible is a thorny one that gets right to the heart of understanding what physicists mean when they use the word "time.
text: Similarly, even if all of our consistency conditions can be met, it does not follow that time travel is physically possible, only that some specific physical considerations cannot rule it out.
text: How do we know that time travel is possible?
text: Part of the great interest of the topic stems from the fact that reasons have been given both for thinking that time travel is physically possible—and for thinking that it is logically impossible!
text: If time travel was logically possible then the time traveller could return to the past