Fact #1: You can’t read while dreaming, or tell the time If you are unsure whether you are dreaming or not, try reading something. The vast majority of people are incapable of reading in their dreams. The same goes for clocks: each time you look at a clock it will tell a different time and the hands on the clock won’t appear to be moving as reported by lucid dreamers.
Fact #2: Lucid dreaming There is a whole subculture of people practicing what is called lucid or conscious dreaming. Using various techniques, these people have supposedly learned to assume control of their dreams and do amazing things like flying, passing through walls, and traveling to different dimensions or even back in time.