Official numbers in the U.S. claim there is virtually full employment right now. But they famously under-count their unemployed. Today's record-low participation rate is a tell-tale sign that all is not well. There's really no official accounting for how some non-working people are surviving.
Forget the outdated notion that only human productivity should sustain "entitlements" such as health care and pensions. Capitalists comfortably assume that the unwaged productivity of robots should be untaxed and exempt from social responsibilities. If the new wealth from the next wave of automation is not shared with society, the economy will crumble from shrinking economic demand. Future prosperity really is a matter of share it or lose it.