[funkyy]

Well, you are wrong. Not sure what communism you are talking about, but communism in countries like Poland and East Germany had exactly that. Everyone was receiving income no matter what. People working on higher positions were receiving higher income and were allowed to buy more. As simple as that.

[imagist]

But higher positions weren't based on the value of work, they were based on nepotism, corruption, etc. Incidentally, I think that's essentially how capitalism works too, but if you're going to claim that work determines pay in a capitalist economy, then you have to admit that it also does in a UBI system.