Although I cannot move and I have to speak through a computer, in my mind I am free.Can we ultimately use the laws of nature to become masters of time itself? I used to avoid talking about it for fear of being labelled a crank. In fact, I'm more like the people who built Stonehenge. If I had a time machine I'd visit Marilyn Monroe in her prime or drop in on Galileo as he turned his telescope to the heavens.Turn right or left and you add the second dimension.Drive up or down a twisty mountain road and that adds height, so that's travelling in all three dimensions. How do we find a path through the fourth dimension?Let's indulge in a little science fiction for a moment.
Free to explore the universe and ask the big questions, such as: is time travel possible?While a human may survive for 80 years, the stones at Stonehenge, for instance, have stood around for thousands of years.And the solar system will last for billions of years. Travelling in time means travelling through this fourth dimension.Perhaps I'd even travel to the end of the universe to find out how our whole cosmic story ends.To see how this might be possible, we need to look at time as physicists do - at the fourth dimension. Every attentive schoolchild knows that all physical objects, even me in my chair, exist in three dimensions. But there is another kind of length, a length in time.
The machine creates a path through the fourth dimension, a tunnel through time.