[saintgimp]

The "lump of labor fallacy" isn't really relevant here because we're not talking about work going away. We're talking about the usefulness of human labor as a means of production going away. No, not entirely, but enough that our economic system as it currently exists will fail and we'll need a new one of some sort.

You know the old illustration about the buggy-whip makers complaining that automobiles were destroying their jobs and putting them out of work, and how could anyone possibly survive that? Then, oh look, there were tons of new jobs created in automobile factories and everyone was better off than before.

Well, in that story, we're not the buggy-whip makers any more; we're the horses. Horses didn't move on to better and more productive forms of transportation employment. They simply became useless except in a few remaining highly-specialized working roles, or as pets. Or glue.