I have no "proof" same as any other "proof" out there. The world is a constantly shifting equilibrium, and I have no idea where the attractor may lie.
But I see a few things that were never possible before.
1) Satiety. What do we really NEED now. We need food, clothing, shelter. Other revolutions happened when a large part of the populace was wanting something but costs were too high for food or clothing, etc. We're now in a time of, for a lot of people, food surplus. Where's the demand coming from? Yeah, we can invent new tech, but how many TVs do you really need? Can that drive growth? I don't have the equations, but we're already seeing this in the US, Europe, and China to some extent. We're demand constrained, from both lack of rapidly growing need, and lack of wages to finance that need. Yes, i'm speaking somewhat USAcentric here (i know there is lack of food security elsewhere) but for good or bad, the American consumer economy is the gravity that all the other economic planets align around.
2) Information networks allow centralization as never before possible. Do you think Jeff Bezos is going to walk into your cafe? No, he lives in Washington. You ship money to him on a regular basis, but he makes damn sure he doesn't ship any back to you or your region. It's not just globalization, but a general shipping of resources to places that don't need to ship resources back, either to foreign shores or even local centrally located economies. This trend is not going to end any time soon.
3) Speed. The other revolutions took place over the course of decades, our current one is happening much faster. A contrived example, what if you spent money on becoming a MySpace consultant? You'd be making close to zero cash now. The ability for jobs to disappear seems (IMHO) faster than what humans can do, in the average sense, to learn skills for new ones.
I know I'm no expert, and not claiming to be, but it's something we need to think about. This isn't even a last year thing - our economy has been slowing for years. It was masked by two events, the first being wives working outside of the home bringing in more household cash. The second, is people using home equity as a credit card, using debt to mask lack of wage increases, and that contributed to a near global economic meltdown. Now that the Home Equity Line of Credit is gone, purchasing power growth is now reverting to wage growth and we're screwed.