Even the brightest minds in, say, 1930 would not predict the iPhone. Maybe the Android though.
Yes, I saw The Fly a long time ago. I would not want to be the first human to test a teleportation device...or time travel...time travel has been mathematically proven to be possible...
Time travel is not considered theoretically possible because of the so called "Grandpa paradox":
If you go back in time and kill your grandpa when he is a newborn then how did you exist to went back in time and kill your grandpa?
Parallel universe, of course! There are theories that, every second, millions of parallel universes are splitting off from the one in which you are conscious. In one of them, I probably beat Magnus Carlsen. It has been mathematically proven to be possible. I am postive about that. I know someone who wrote several books about the topic and has a Ph.D. I cannot answer the question about the paradox, though.
it's like streaming a video