But who defines “productive?” I might consider someone going to work as “productive,” but someone going to a friend’s house as “unproductive.” Productive is really a matter of opinion unless you want to consider economics; a homeless person riding a bus generates no income for anyone — so should they pay more to ride the bus? Unless they are actually going somewhere to engage in commerce, that would be, by definition, unproductive. Going to a friend’s house is equally unproductive from an economic sense. Who gets to be the arbiter of “productive?” That gets to be a dangerous slippery slope.