Not Compassion at All

Interesting thought experiment. My worry would be inflation: Not Compassion at All:

If you push the button, the real income of all the "have-nots" in the world will double overnight. Their health care will be twice as good as it is now, their disposable income will be twice as large, their houses will be twice as nice, and so on. But another consequence of pushing this button will also be the fact that the "haves" will see their prosperity increase ten-fold. They will all be ten times richer, thus enabling them to swank around all day.