It's just basic math. Anyone who thinks that any nation can have 100% employment as well as constant growth when all the while we are barreling towards more & more automation just simply isn't grounded in reality. The real question we need to be considering is what kind of future we want to have when everything is automated. Right now we are heading towards the unfortunate distopia as described in Manna.
"How is it that a lame man does not annoy us while a lame mind does? Because a lame man recognizes that we are walking straight, while a lame mind says that it is we who are limping." - Pascal