I have just watched that show 'sci fi science', and to me it just does not make sense. He said that in the future we will be able to manipulate space and time, but how can they exist. Space is nothing, and time is an idea created by us. I can only think that space-time is something which matter exists inside. But even then, how could it be possible to manipulate it. The guy on the show said we can do this using negative energy, but for that to work, wouldn't space-time have to be energy in the first place? which it isn't. If someone understands this more, please explain this to me, and anyone else confused by it. Thanks, Jake..