Transcendence 25-30 years away?

I'm looking forward to seeing the movie Transcendence, when I have a chance, but I wonder about the neuroscientists who are reportedly telling actor Paul Bettany that the ability to upload your mind into a computer will occur in 25 or 30 years--enabling immortality. They're all saying this? How many are they? If they're right, I suppose it would be a huge investment opportunity if one could get in early on whatever companies these neuroscientists are involved with. Or maybe the real money is in companies that design patches to get your mind back after it's been stolen by a future generation of the Heartbleed bug. As I suggested recently with brain implants, thinking about how technology works and doesn't work now should inspire some caution about promises of transcending the human condition a few decades from now.