He didn't as much predict it as made it. He obviously didn't do it alone, but he did spend a lot of his life making those predictions (really promises) come true.
maybe not that one :)
Hell, you can buy a mobile phone (a computer that fits in your pocket!) for less than that. And don’t get met started about raspberry Pi and the likes.
We are genuinely living in the future. We just don’t realize it all the the time.