20 years few seem to think a brain "in the cloud". We must however assume that 20 years of technological advances, with hi-tech giants increasingly interested in the medical sector, could completely change the world. Twenty human years in technological world are as geological eras. I don't know if this will happen, it seems a bit excessive, but hope to get to that point and see if he was right.
Well, but here are a few issues. For one thing, we sped up flight and other advances because they happened in a time of much, much less regulation. You can't just throw things at a wall anymore to see what sticks like you could back in the 1930s/40s/50s. Also, these same tech giants are very fickle and generally only want to create new things for their specific benefit. You may hear them talking about doing something 10 years down the road, and 2 years down the road it's been forgotten and they are making an announcement about another innovation. The most important and most common reason these ideas don't pan out is because they rely on tech we have now
and tech we
expect to have a decade from now. Almost every time, that future technology turns out to take much longer than planned if it ever shows up at all.
We've proven we can make flying cars. They may be basic, but we can do it. In the 1950s scientists and science fiction authors (who are far better at predictions than anyone else..see Asimov) were 1000% certain we'd be flying above the roads 30 or so years in the future. 60 years has passed, so where are they?