Yes, but Karl Marx's plan relies on motivating self interested humans, who have a natural desire to minimize their output energy expenditure. Machines can make

Yes, but Karl Marx's plan relies on motivating self interested humans, who have a natural desire to minimize their output energy expenditure. Machines can make us more and more stuff all through the night, and never ask for vacation. Functional communism/socialism is only realistic at a point when labor becomes trivial - e.g. walk over to the replicator and grab the cheeseburger it made you.