[seph-reed]

Think of machines and robots as workers that earn pay for their work. Then imagine that pay is spread back into the economy (like payed workers do), rather than just sitting in the robot owners account to "trickle down." Another way of putting this: Slavery (or automation) are really great for the upper class who owns, but destroys the livelihoods of everyone below who has to compete.

Follow up question: How many inventors created their world changing machine in dreams of making more money for the upper class, vs how many dreamed to help all of humanity?