Question Author
Whicker, I think one of the questions asked was 'If time travel is possible, why haven't people from the future come back?' Mmmm ... maybe they have, but perhaps they're not telling us. The biblical God springs to mind. :o)
Teddio, yes I know about time dilation - but does the future already exist?
Styley, according to Einstein, a time machine wouldn't allow you to go back further than the date the time machine was invented, so at the moment there's no question of going back to resolve issues.
Luna, I would assume that everything around them would change as they travelled through time. If it is possible to travel into the future, I don't think of it as a place. If I consider the possibility at all, I think of it as a parallel universe. When I read this article, I wondered about coming back too. It's mind-boggling, isn't it?
Bensmum, my brain hurts too!! It's fascinating stuff though.