One way

Tim invented a machine that would allow him to travel into the future. His body would remain in the past while his brain would be put inside the body of a person from the time he would be visiting. He set the device for 100 years and found himself in a new time and in a new body. He was a little surprised to be in a woman’s body, but he supposed it was random. What disappointed Tim was that the future was pretty much the same as the present. Worse still was that he discovered time travel was one way! He could keep going into the future, but never return to his old life in the past!