Brautigan was Poet-in-Residence at Caltech in 1967 when he wrote this poem. He was a bit of a fish out of water there. The students imagined that they were creating a future where the grunt work of living would be taken over by machines, thus allowing humanity to pursue higher goals in the arts and science. Brautigan may have taken this to its possible extreme, where humans need do nothing at all because of the machines, becoming like pets to humans. It's a future that looks appealing on first brush, but winds up dehumanizing the people it was meant to free to be more human.