The question is not whether the system works, but whether we like the way it works. Just because something works doesn't mean it is desirable. Concentration camps work, if your purpose is to enslave people. Stealing works, if all you care about is money. Lying works, if you don't give a damn about your personal integrity. Literally anything, no matter how monstrously immoral will work, depending on your desires and how you define the term work,.
Quotes, by Sy Leon