•99% of everything predicted will be wrong.
•Just like the explosion of computing that came after the mechanical revolution, I think there will be another technology that explodes otnto the scene. (And it's likely it isn't even invinted yet).
This prediction list is worth a read, but I think we will have everything on the list long before 50 years.
Also the comment about "probably owned by Google," made me smile. In 50 years I think Google will have been beaten by something, or will be much bigger than the article gives them credit for.