Of course, though in systems where the material is sorted for collection, there's a significant amount of value added for free (in fact, it's double-dipping for

Of course, though in systems where the material is sorted for collection, there's a significant amount of value added for free (in fact, it's double-dipping for the haulers, since they charge for their service, and sell the sorted materials). Now, my impression from looking at curbside sorting in my neighborhood is that the value-add is not great, lots of marginal or flatly forbidden things are mixed in, so I understand that human beings still eyeball everything once more, on a conveyor belt, and then automated sorting separates things further, neither of which are free...