I agree. It seems to me that robots have the potential to have a greater impact than the internet, social, mobile. And that's not to diminish the profound change those innovations have brought about.

It just seems that the ability to act in the physical world will bring incredible, profound changes.

Robots will certainly bring huge change some day. The problem is that it is definitely going to come before our social structures are ready for it. There's going to be a real hard time adapting to the fact that a very large number of jobs will no longer requires humans to do them.