The decision to use artificial intelligence–powered robots in the fast food industry depends upon differences in costs and performance between humans and robots. State minimum wage laws are pushing the industry toward robots.
Most BRICS currencies are weak and getting weaker, and creating a new joint "BRICS currency" won't solve the problem. Joining together a bunch of weak currencies does not somehow create a strong currency.
Just-wage theory tells us that an employer cannot reduce his workers' wages below some presumed "cost of living." Yet, that same employer can be permitted to reduce the worker's wage to zero if the worker has been replaced by a machine.