Ok - if your system is ever enacted, I'm cutting my work hours back by 50% or more.

I'm also hoping that not everyone does this, because if everyone did, there would be far less than $90k/person floating around. But that won't happen, right?

It means that today, humans create enough wealth annually so that every two-parent household on the planet could live like the American middle class.

This assumes that the total cost of providing the same middle-class resources to everyone in the world is equal to the present marginal cost of doing so.