Time Travel

There used to be a law that said you can explore the concept of time travel all you like, provided everything takes place within the space of a dream or vision. Why are they always doing the dream? Why does it need to be a dream? Again, i guess it comes back to just the basic understanding that where time is weird, therefore, that's where time travel is going to happen. But regardinge elanachronopete, i do want to say, while it looks like a great story, and while it does appear to predate a wells a short story by one year,. I think it's probably still fair to say that wells is probably the major popularizer of