No, and this is exactly the point I was trying to drive home when I made my original post about over 80% of the all humans living on less than $10/day. When the OP asked if "anyone can live on $40/day" what they really meant was, "Can people live a lifestyle reasonably close to mine on $40/day." The answer to that is obviously not. The question is being asked by someone who is almost certainly in the top 1% of incomes across the globe (which is about $34k/yr). But the real answer is that a person can live incredibly well by global standards on $40/day.