I believe it's the "equal work" bit that makes that a problem. I think I work harder than some of my coworkers and should therefore make more. Who decides what equal work is?
I'm happier not knowing
I'm happier not knowing
Benjamin Franklin said: "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety."
Not knowing the wages of those around you makes collective organization and bartering harder which is bad for workers in aggregate.