A vision for economics

What could our economy and society be like in thirty to forty, maybe even fifty years? Just doing the same things differently? Or doing really different things? What could those things be? And what could economics tell us about that far-term future? If you ask for such genuine vision, the reaction you'll most likely receive ranges somewhere between an innocent shrug and a linear extrapolation of the recent past: neither inspired nor very inspiring. With only few exceptions.