The conversation between human and AI assistant.
Does the fact that nobody has ever visited us from the future mean that time travel is undoubtedly impossible?
What do you think about the concept of paradoxes in time travel? Like going back in time and accidentally changing an event in a way that prevents the time traveler from going back in the first place?
The so-called "grandfather paradox" is one of the most famous examples of a time travel paradox, but there are many others that could arise from changing the past. Some scientists suggest that the existence of paradoxes is a sign that time travel is impossible, while others argue that solutions to paradoxes could involve multiple timelines or alternative universes. However, these are still just theoretical ideas, and we don't have any experimental evidence to support them.