The theory of time travel can be real?

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In the past, we thought there would be no way that heavy objects like planes could fly up there because of gravity, but decades later, we see big planes up in the sky soaring easily. We thought we couldn't reach or communicate with people all around the globe except by writing letters and sending them through snail mail, but now, with a tap of a finger, we can send messages, letters and everything within seconds to any person in the world connected to the Internet. These are impossible things that people in the past would have never dreamed of. Now we go to time travel. I'm fascinated by films depicting time travel where the actor travels in time to correct a misdeed he has done in the past, or to fulfill an obligation he has forgotten. Wouldn't that be wonderful, to be able to 'redo' your life again to make it better? I believe that eventually, scientists or experts in the field would discover a way to travel into the past or the future. Wanna bet? Who's with me in this journey?