Economics != economic activity (at least in the context you are using it).
TheCowboy is right: Economics is still at its heart the study of the problem of scarcity.
TheCowboy is right: Economics is still at its heart the study of the problem of scarcity.
Does it even matter? It matters if it means our fully automated jobless future is penury and starvation instead of the post-scarcity Culture we're looking forward to.