In a way, time traveling is the ultimate frontier for the human mind. Consider the amount of questions that can be derived form the paradox of the astronauts, one leaving on Earth and one on a rocket swirling around space, who grow old at different speeds.
That's a sort of time travel. In a way, memories are time travel and much of today's technological advances are used for the concept of time travel, which involves relieving the past via photographs, videos and audio. And, for those who haven't had enough, there's the time travel of fiction books and video games: going back to a time that was, changing things and then returning to the present in order to see what's changed and how.