In what ways does Vonnegut use or refer to machines in chapter 1? what can we infer from these references?

massacre machinery

". . . there is nothing intelligent to say about a massacre." Only the birds speak after a massacre, and they only have an unintelligible question, "Poo-tee-weet?" Still, some of us might learn to say No when asked "to take part in massacres" or produce "massacre machinery." That might be something." Page 19