This is the right question to ask. The laborers in question could all be productively employed as artists, homemakers, social workers -- whatever. To the extent

This is the right question to ask. The laborers in question could all be productively employed as artists, homemakers, social workers -- whatever. To the extent that we get lots of new workers in those categories, and still get to have groceries too, that's a net gain for society. But it's up to society to get us there, and right now society doesn't seem even remotely up to the challenge.